Biology Class 11 Multiple Choice Questions, MCQs (Objective Questions) by TEACHING CARE online tuition and coaching classes

Biology Class 11 Multiple Choice Questions, MCQs (Objective Questions) by TEACHING CARE online tuition and coaching classes.

Animal (Animalia) Kingdom: MCQs Quiz – 1

Question 1

Who proposed artificial system of classification

AJohn Ray
BLamarck
CLinnaeus
DWallace
Question 2

Who formed the ‘key’ for identification of animals

AJohn Ray
BTheophrastus
CGoethe
DGeorges Cuvier

 

Question 3

Which phylum has a true coelom?

ACnidaria
BMollusca
CPorifera
DAnnelida
Question 4

Which organism possesses characteristics of plants and animals?

ABacteria
BMonera
CEuglena
DMycoplasma

 

Question 5

A fat called blubber could be obtained from

ABats
BPorpoises
CDolphin
DBlue whale
Question 6

Which one of the following phylum is characterized by absence of true coelom?

AAnnelida
BMollusca
CEchinodermata
DNematoda

 

Question 7

Which one of the following pairs of animals comprises ‘jawless fishes’?

AGuppies and hag fishes
BLampreys and eels
CMackerels and Rohu
DLampreys and hag fishes
Question 8

In a sponge the whole inner surface of the asconoid is lined by

AChoanocytes
BPorocytes
CPinacocytes
DAmoebocytes

 

Question 9

Which one of the following kinds of animals is triploblastic?

ACorals
BFlat worms
CSponges
DCtenophores
Question 10

Which one of the following is not a member of the group Eutheria?

AMole
BSquirrel
CPangolin
DPlatypus

 

Question 11

The ______ are undifferentiated embryonic cells and produce the sex cells as well.

AThesocytes
BMyocytes
CArchaeocytes
DChromocytes
Question 12

Which one of the following groups of animals is bilaterally symmetrical and triploblastic?

ASponges
BCoelenterates (Cnidarians)
CAschelminthes (round worms)
DCtenophores

 

Question 13

Why do camels have a long neck?

Amore vertebrae
Bvertebral plates between adjoining vertebrae
Cincrease in size of each vertebra
Dcartilage pads between vertebra
Question 14

Which one of the following animals shows discontinuous distribution?

AGreen muscles
BBats
CLung fishes
DPacific salmons

 

Question 15

Which of the followings are egg laying mammals?

AInsectivores
BMonotremes
CMarsupials
DBats

 

Animal (Animalia) Kingdom: MCQs Quiz – 2

Question 1

Which of the following types of fish is eaten usually by humans?

AJawless
BBony
CCartilaginous
Dall of the above
Question 2

Which of the following statements is true?

AInvertebrates posses a tubular nerve cord
BNon chordates have a vertebral column
CAll chordates are vertebrates
DAll vertebrates are chordates

 

Question 3

Which of the following statements is true about Roundworms?

ARoundworms may reach 5 cm in length.
BThey are non-segmented
CThey are generally dark-colored.
DThey occur only in the soil.
Question 4

Which of the following statement is correct?

APlatypus lays eggs
BCamels have biconcave RBCs
CWhales respire by gills
DBats do not fly

 

Question 5

Which one of the following groups of animals is correctly matched with its one characteristic feature without even a single exception?

AMammalia : give birth to young ones
BReptilia : possess 3-chambered heart with one incompletely divided ventricle
CChordata : possess a mouth provided with an upper and a lower jaw
DChondrichthyes : possess cartilaginous endoskeleton
Question 6

Which of the following reptiles has four chambered heart?

ATurtle
BSphenodon
CKing cobra
DCrocodile

 

Question 7

Which of the followings is a diploblastic, radially symmetrical animal?

AHydra
BEarthworm
CRoundworm
DLiver fluke
Question 8

Which of the following is non poisonous snake?

AKrait
BCobra
CViper
DPython

 

Question 9

Which of the following animal is not a vertebrate?

AOryctolagus
BFish
CSparrow
DAmphioxus
Question 10

Which kind of symmetry occurs in sea anemone?

ABilateral
BRadial
CAsymmetry
DNone of these

 

Question 11

In a sponge which of the followings are responsible for maintaining the current of water?

APinacocytes
BPorocytes
CChoanocytes
DAmoebocytes
Question 12

Which is not an insect?

ASpider
BTermite
CMosquito
DAnt

 

Question 13

Which is non poisonous?

ACentipede
BScorpion
CSpider
DCrab
Question 14

Which is limbless amphibian?

AAlytes
BHyla
CIchthyophis
DPhlebotomus

 

Question 15

Cold blooded animals are

Awhich have cold blood
Bwho feel cold a lot
Cwho can regulate their temperature
Dwho can not regulate their temperature

 

Animal (Animalia) Kingdom: MCQs Quiz – 3

Question 1

Which is a living fossil?

ACoelacanth
BLimulus
CSphenodon
DAll of these
Question 2

Which is a coelenterate?

ASea Mouse
BSea Urchin
CSea Pen
DSea cucumber

 

Question 3

Which animal of the followings belongs to class crustacea?

ACockroach
BCyclops
CGrasshopper
DMosquito
Question 4

When tail is cylindrical and ventral scales do not extend the entire width of belly the snake is

Adefinitely poisonous
Bcan be poisonous or non poisonous
Cnon-poisonous
Ddeadly poisonous

 

Question 5

Collar cells are general characteristic of

ASand worm
BRoundworms
CCoelenterata
DSponges
Question 6

Common character of all vertebrates without exception is

ABody divided into head, trunk and tail
BTwo pairs of limbs
CExoskeleton
DPresence of skull

 

Question 7

What will you look for to identify the sex of the following?

AMale shark – Claspers borne on pelvic fins
BFemale Ascaris – Sharply curved posterior end
CMale frog – A copulatory pad on the first digit of the hind limb
DFemale cockroach – Anal cerci
Question 8

What is common between kiwi, penguin and ostrich?

AThey are running birds.
BThey are flightless birds.
CThey are migratory birds.
DThey have four toes.

 

Question 9

What color is the blood of crayfish?

Agreen
Bblue
Cred
Dwhite
Question 10

Turtles are

AArthropods
BPisces
CReptiles
DMolluscs

 

Question 11

A true coelom is lined on all sides by

AEctoderm
BMesoderm
CEndoderm
DEctoderm and endoderm
Question 12

Which of the following possesses post anal tail?

ASpider
BScorpion
CCockroach
DCobra

 

Question 13

A common feature of tracheae of Cockroach and mammal is that both have

ACiliated inner lining
BNon-collapsible walls
CPaired nature
DOrigin from head
Question 14

Polymorphism occurs in animals of the class

AHydrozoa
BAnthozoa
CScyphozoa
DGastropoda

 

Question 15

The clam nervous system is composed of

Alabial palps
Bone pair of ganglia
Ctwo pairs of ganglia
Dthree pairs of ganglia

 

Animal (Animalia) Kingdom: MCQs Quiz – 4

Question 1

Phylum that doesn’t have a true coelom is

APlatyhelminthes
BAnnelida
CEchinoderms
DArthropoda
Question 2

Who wrote the book ‘Systema Naturae’?

ALamarck
BDarwin
CWallace
DLinnaeus

 

Question 3

Which one of the following statements about certain given animals is correct?

AFlat worms (Platyhelminthes) are coelomates
BRound worms (Aschelminthes) are pseudocoelomates
CMollusks are acoelomates
DInsects are pseudocoelomates
Question 4

The radially symmetrical cnidarians have a ______ body in two distinct layers

Asac-like
Bbilateral
Cflattened
Dsymmetrical

 

Question 5

The cells absent in gastrodermis of Hydra are

AGland cells
BStinging cells
CNutritive cells
DNerve cells
Question 6

All birds have

Aomnivorous habit
Bfeathers and can fly
Cnests to care the babies
Dcalcareous-shelled egg

 

Question 7

Tapeworm is

ADigenetic parasite
BNematode
CMonogenetic parasite
DAnnelid
Question 8

Tapeworm does not possess digestive system as it

ADoesn’t require food
BObtain food through general surface
CDoes not require solid food
DLives in intestine

 

Question 9

Sponges are ______ filter feeders.

Aoccasional
Bterrestrial
Cactive
Dsessile
Question 10

Class bivalvia is characterized by

Aabsence of gills
Babsence of head
Ccoiled shell
Dpresence of tentacles around mouth

 

Question 11

Silk thread is obtained from silk moth during

ANymph state
BLarval state
CPupal state
DAdult state
Question 12

Silk fibre contains which proteins?

AMucin and serine
BFibrin and serine
CCollagen and elastin
DFibroin and sericine

 

Question 13

Reptilian feature of Archaeopteryx is

AU shaped furcula
BPresence of abdominal ribs
CFeathers with barbules
DPresence of a beak
Question 14

______ is not an example of a cnidarian?

ACoral
BFlatworm
CJellyfish
DHydra

 

Question 15

“Kala-azar” and “oriental sore” are spread by

ASand fly
BBed Bug
CLouse
DFruit fly

 

Animal (Animalia) Kingdom: MCQs Quiz – 5

Question 1

In cephalopod, the brain is formed from the fusion of ______.

ASpinal cord
BGanglia
CEye tissue
DTrochophore
Question 2

Fluke infections are diseases of the _______ in humans.

ABlood
BBile
CDigestive tract
DLungs

 

Question 3

Radial symmetry is usually associated with

Alower grade of organization
Bcreeping mode of life
Caquatic life
Dsedentary mode of life
Question 4

Male mosquitoes usually feed on

AGarbage
BHuman blood
CFlower sap
DAll of the above

 

Question 5

Ichthyophis is a

AWorm blooded
BLimbless reptile
CMammal
DLimbless amphibian
Question 6

Pupa occurs in the life cycle of

ABlatta
BMosquito
CHousefly
DPeriplaneta

 

Question 7

Pneumatic bones are expected to be found in

AFlying fish
BWhale
CTadpole of frog
DPigeon
Question 8

Peripatus is a connecting link between

ACoelenterata and Porifera
BCtenophora and Platyhelminthes
CMollusca and Echinodermata
DAnnelida and Arthropoda

 

Question 9

The osculum is an excretory structure in

AStar fish
BHydra
CSilver fish
DSponge
Question 10

Ornithorhynchus is a

Afossil bird
Bflightless bird
Cconnecting link between reptiles and birds
Dmammal

 

Question 11

In which one of the following the genus name, its two characters and its class/phylum are correctly matched?

 Genus name Two characters Class/Phylum
1Aurelia(a) CnidoblastsCoelenterata
  (b) Organ level of organization 
2Ascaris(a) Body segmentedAnnelida
  (b) Males and females distinct 
3Salamandra(a) A tympanum represents earAmphibia
  (b) Fertilization is external 
4Pteropus(a) Skin possesses hairMammalia
  (b) Oviparous 
A1 
B2 
C3 
D4 
Question 12 

Bed Bugs contribute to the spread of

ATyphoid
BYellow fever
CTyphus
DTrench fever

 

Question 13

Annelids are called ______ worms.

AParasitic
BSegmented
CFlat-bodied
DAcoelomate
Question 14

Animals are motile because they have

AMetabolism
BEnergy
CBoth muscle fibers and nerve fibers
DLegs or wings

 

Question 15

Echolocation is usually associated with

ARats
BBirds
CBats
DMonkeys

 

Animal (Animalia) Kingdom: MCQs Quiz – 6

Question 1

Insect mouthparts are adapted for different functions in different species. Mouthparts of houseflies are used for

ASiphoning
BPiercing and sucking
CSponging and lapping
DBiting and chewing
Question 2

Earthworms eliminate cellular wastes and excess water through excretory tubules called ______.

ANephridia
BFlame cells
CCoelom
DGizzard

 

Question 3

In many animals the rapid change from the immature organism to the adult (change from larva to adult in insects) means

ACephalization
BMolting
CMetamorphosis
DEndothermy
Question 4

Sharks, skates, and rays are also called ______ fishes.

AJawless
BBony
CCartilaginous
DFreshwater

 

Question 5

In planarians water enters the body by ______.

Aosmosis
Bcontractile vacuoles
Cflame cells
Dactive transport
Question 6

Animals, floating and drifting on the surface of water are ______.

ABenthos
BPelagic
CPlankton
DNeritic

 

Question 7

A phenomenon when parasite parasitizes themselves is known as

AHyperparasitism
BParasitoids
CMonoxenous parasitism
DPolyxenous parasitism
Question 8

Air bladder is present in

AChondrichthyes
BStar fishes
CActinopterygii
DFlying fishes

 

Question 9

All flat worms differ from all round worms in having

ATriploblastic body
BSolid mesoderm
CBilateral symmetry
DMetamorphosis in the life history
Question 10

The cross section of the body of an invertebrate is given below. Identify the animal which has this body plan.

ARound worn
BPlanaria
CEarthworm
DCockroach

 

Question 11

Which one of the following groups of three animals each is correctly matched with their one characteristic morphological feature?

 AnimalsMorphological feature
(1)Cockroach, Locust TaeniaMetameric segmentation
(2)Liver fluke, Sea anemone, Sea cucumberBilateral symmetry
(3)Centipede, Prawn, Sea urchinJointed appendages
(4)Scorpion, Spider, CockroachVentral solid central nervous system
AOption (1) 
BOption (2) 
COption (3) 
DOption (4) 
Question 12 

Which one of the following is NOT a characteristic of phylum Annelida?

AVentral nerve cord
BClosed circulatory system
CSegmentation
DPseudocoelom

 

Question 13

Which one of the following is the true description about an animal concerned?

ACockroach – 10 pairs of spiracles (2 pairs on thorax and 8 pairs on abdomen)
BEarthworm – The alimentary canal consists of a sequence of pharynx, oesophagus, stomach, gizzard and intestine
CFrog – Body divisible into three regions – head, neck and trunk
DRat – Left kidney is slightly higher in position than the right one
Question 14

Phylum mollusca can be distinguished from other invertebrates by the presence of

ABilateral symmetry and exoskeleton
BA mantle and gills
CShell and non-segmented body
DA mantle and non-segmented body

 

Question 15

Consider the following four statements (a – d) about certain desert animals such as kangaroo rat.

(a) They have dark colour and high rate of reproduction and excrete solid urine

(b) They do not drink water, breathe at a slow rate to conserve water and have their body covered with thick hairs

(c) They feed on dry seeds and do not require drinking water

(d) They excrete very concentrated urine and do not use water to regulate body temperature.

Which two of the above statements for such animals are true?

A(a) and (b)
B(c) and (d)
C(b) and (c)
D(c) and (a)

 

Animal (Animalia) Kingdom: MCQs Quiz – 7

Question 1

Order Rhynchocephalia consists of

ATuataras
BLizards and snakes
CTurtles and tortoises
DCrocodiles, alligators, caimans
Question 2

Cnidarians having cells called cnidocytes, contain organelles known as ______.

APolymorphism
BNematocysts
CHermaphroditism
DNone of these

 

Question 3

The metamorphosis of insects appears to be regulated through

AThyroxine
BHaemolymph
CEcdysone
DAll the above
Question 4

Which one of the following is oviparous?

AElephant
BFlying fox
CPlatypus
DWhale

 

Question 5

Cold-blooded animals fall into which category?

AEctotherms
BPsychrotherms
CEndotherms
DThermophiles
Question 6

Radula is found in

APila sp.
BChiton sp.
CLamellidens sp.
DPinctada sp.

 

Question 7

Cysticercus stage is formed in

ATaenia
BPlasmodium
CLeishmania
DWuchereria
Question 8

One example of animals having a single opening to the outside that serves both as mouth as well as anus is

AFasciola
BOctopus
CAsterias
DAscidia

 

Question 9

Ornithorhynchus is an example of :

ADinosaur
BMonotreme mammal
CMarsupial mammal
DEutherian mammal
Question 10

Phylogenetic classification is based on

AExternal similarity
BCommon evolution
CHabit and habitat
DUtilitarian system

 

Question 11

Radial symmetry occurs in which set?

AEchinodermata and Coelenterata
BPorifera and Coelenterata
CMollusca and Arthropoda
DPlatyhelminthes and Coelenterata
Question 12

Taxonomically a species is

AA group of evolutionary related populations
BPopulation having same evolutionary basis
CCategory to which most taxonomic information is attached
DFundamental unit is phylogenetic history of organisms

 

Question 13

Column I contains larval stages and Column II contains the group to which it belongs. Match them correctly and choose the right answer from the options given below:

 Column – I  Column – II
A Planulap Annelida
B Tornariaq Mollusca
C Trochophorer Arthropoda
D Bipinnarias Chordata
E Glochidiumt Echinodermata
  u Coelenterata
AA = u, B = s, C = p, D = t, E = q
BA = q, B = t, C = p, D = s, E = u
CA = t, B = s, C = r, D = q, E = p
DA = s, B = r, C = q, D = p, E = t
Question 14 

Which one of the following statements is correct?

AGerm layers are tissue layers in the embryos of all animals except sponges.
BGerm layers include ectoderm, endoderm, and mesoderm.
CFlatworms have three germ layers whereas cnidarians and ctenophores have two.
DAll of these are correct.

 

Question 15

The figure shows four animals (a), (b), (c) and (d). Select the correct answer with respect to a common characteristic of two of these animals.

(a) (b) (c) (d) 
A(a) and (d) have cnidoblasts for self-defence 
B(c) and (d) have a true coelom 
C(a) and (d) respire mainly through body wall 
D(b) and (c) show radial symmetry 

 

Animal (Animalia) Kingdom: MCQs Quiz – 8

Question 1

Which one of the following statements is incorrect?

AViviparity is the reproductive pattern shown by most mammals
BViviparity occurs primarily in salamanders and caecilians.
CIn viviparity, a shell does not form around the egg.
DViviparity is not found in species of lizards and snakes.
Question 2

Which one of the following statements is stated incorrectly regarding cartilaginous fishes?

ACartilaginous fishes have sense organs.
BMost cartilaginous fishes have color vision.
CTeeth-like placoid scales are found on the skin of cartilaginous fishes.
DIn cartilaginous fishes, gas exchange occurs in the gills.

 

Question 3

Which statement is correct regarding reptiles, birds, and mammals?

AEvolved from a common ancestor
BEmbryos are surrounded by a fluid-filled sac called amnion
COuter covering is largely watertight.
DAll of the above
Question 4

Which one of the following characteristics is NOT a shared by birds and mammals?

AA backbone and internal skeleton
BBreathing using lungs
CViviparity
DWarm blooded nature

 

Question 5

Which one of the following statements is incorrect?

ARadial symmetry is displayed by sea anemone and aquatic animal.
BFasciola hepatica is also known as the sheep liver fluke.
CTriploblastic animals are usually bilaterally symmetrical
DMesoglea is present in between ectoderm and endoderm in Obelia
Question 6

Which one of the followings belongs to platyhelminthes?

APlasmodium
BTrypanosoma
CSchistosoma
DWuchereria

 

Question 7

Radial symmetry is generally exhibited by which animals?

AWhich are attached with substratum
BWhich are aquatic
CWhich have ciliary feeding
DWhich have one opening of alimentary canal
Question 8

Tachyglossus is a connecting link between

AReptiles and Birds
BAmphibians and Reptiles
CBirds and Mammals
DReptiles and Mammals

 

Question 9

The scientific name of Asian tiger mosquito

AAedes aegypti
BAedes albopictus
CAedes taeniorhynchus
DAedes albolineatus
Question 10

Water-Vascular’ system is found in

ASea-anemone
BSea-pen
CSea-cucumber
DSea-horse

 

Question 11

Cell tissue grade of organization occurs in

APlatyhelminthes
BSponges
CProtozoa
DCoelenterata
Question 12

Swarming generally occurs in

APyrilla
BMosquito
CHouse fly
DLocust

 

Question 13

Animals having a built in thermostat to maintain constant body temperature are known as

ABiothermic
BPoikilothermic
COligothermic
DHomeothermic
Question 14

Which one of the followings in birds indicates their reptilian ancestry?

AEggs with a calcareous shell
BScales on their hind limbs
CFour-chambered heart
DTwo special chambers crop and gizzard in their digestive tract

 

Question 15

______ are devoid of respiratory, excretory and circulatory organs.

AThreadworms
BSponges
CTapeworms
DLiver fluke

 

 

Animal Tissue – 01

Question 1

An example of merocrine gland is______.

ASebaceous gland
BPineal gland
CSalivary gland
DMammary gland
Question 2

Antigens are present in______.

ACell surface
BCell cytoplasm
CNuclear membrane
DPlasma

 

Question 3

ATPase enzyme needed for muscle contraction is located in______.

AActinin
BTroponin
CMyosin
DActin
Question 4

Basement membrane is derived from______.

AEctoderm
BEndoderm
CEpidermis
DEpidermis and connectile tissue

 

Question 5

Blood cells that transport oxygen within the body are the ______.

APlasma
BErythrocytes
CPlatelets
DLeukocytes
Question 6

Bone acts as a reservoir for which of the following elements?

ANitrogen
BCarbon
CCalcium
DHydrogen

 

Question 7

Bone marrow occurs in______.

ARibs
BRibs, sternum
CRibs, cranium
DRibs, sternum, cranium
Question 8

Cancer cells are more easily damaged by radiation than normal cells because they are______.

AStarved of nutrition
BDifferent in structure
CNon dividing
DUndergo rapid division

 

Question 9

Cells lining the blood capillaries are called______.

AOxyntic cells
BEndothelial cells
CParietal cells
DHaemocytes
Question 10

Chemically an antibody is______.

ANucleoprotein
BLipid
CCarbohydrate
DProtein

 

Question 11

Connective tissue mainly contains______.

AActin
BReticulin
CCollagen
DElastin
Question 12

Connective tissue originates from______.

AEndoderm
BEctoderm
CMesoderm
DEndo-mesoderm

 

Question 13

Contractile protein of muscle is______.

ATubulin
BMyosin
CActin
DTropomycin
Question 14

Ends of long bones have______.

ACalcified cartilage
BElastic cartilage
CHyaline cartilage
DFibrous cartilage

 

Question 15

Ends of two bones are connected by______.

AMuscles
BTendons
CLigaments
DCartilage
Question 16

Which covers cartilage?

APericardium
BPerichondrium
CPerineurium
DPeriosteum

 

Question 17

Which glands secrete hormones directly into the extracellular space?

AEndocrine glands
BApocrine gland
CMerocrine gland
DNone of the above
Question 18

Which is coiled tubular gland?

AVilli
BSebaceous
CSweat gland
DTestes

 

Question 19

Which is not correctly matched?

ALiver-Kupffer cells
BPancreas-Glisson‘s capsule
CKidney-nephrons
DTestis-seminiferous tubules
Question 20

Which of the following has slowest growth rate?

AConnective tissue
BEpithelial tissue
CNervous tissue
DNone of these

 

Animal Tissue – 02

Question 1

Epithelial tissues arise from______.

AEctoderm
BEndoderm
CMesoderm
DAll the above
Question 2

Erythrocytes of adult rabbit and other mammals are formed in______.

AKidney
BLiver
CSpleen
DBone marrow

 

Question 3

Fibrous tissue which connects bones is______.

AConnective tissue
BTendon
CAdipose tissue
DLigament
Question 4

Four healthy people in their twenties got involved in injuries resulting in damage and death of a few cells Of the following, which cells are least likely to be replaced by new cells?

AOsteocytes
BLiver cells
CNeurons
DMalpighian layer of the skin

 

Question 5

From which embryonic layer develops the kidney______.

AMeso-endoderm
BMesoderm
CEndoderm
DEctoderm
Question 6

Functional unit of Kidney is______.

AGlomerulus
BHenley’s loop
CNephorn
DPelvis

 

Question 7

Glands are composed of which of these tissue types?

AEpithelium
BConnective
CMuscle
DNervous
Question 8

Ground substance of connective tissue is mainly made up of______.

AMonosaccharides
BPhospholipids
CLipids
DMucopolysaccharides

 

Question 9

Haversian canals are found in______.

AAscon type simple sponge
BLong bone of rat
CInternal ear of mammals
DSpinal cord of vertebrates
Question 10

Haversian systems are found in the bones of______.

APanther
BPigeon
CPython
DPipe fish

 

Question 11

In frog stratum corneum of skin contains______.

ALiving, nucleated, columnar cells
BLiving, non nucleated. flattered cells
CDry, non nucleated. flattened cells containing keratin
DNon living, nucleated, columnar cells
Question 12

Intrcalated discs are found in______.

ABetween neurons
BIn cardiac muscles
CAt the junction of muscles and nerves
DIn striped muscles

 

Question 13

Large number of mitochondria are found in______.

AThigh muscle
BCardiac muscle
CBreast bone of bird
DAll of the above
Question 14

Larynx and trachea contain______.

AHyaline cartilage
BXiphoid cartilage
CSolid bone
DCartilage bone

 

Question 15

Longest smooth muscles are found in______.

ALegs of athletes
BAbdomen
CUterus of pregnant women
DBack muscles
Question 16

Which of the following is NOT a function of epithelial tissue?

ACovers surfaces
BSecretion and absorption.
CSupport of the body
DLining of the digestive tract

 

Question 17

Which of the following substance, if introduced into the blood stream would cause coagulation of blood at the site of its introduction?

AThromoboplastin
BFibrinogen
CHeparin
DProthrombin
Question 18

Which one of the following contains the largest quantity of extracellular material?

AStriated muscle
BAreolar tissue
CStratified epithelium
DMyelinated nerve fibres

 

Question 19

Which protein occurs in the matrix of cartilage?

AOssein
BCasein
CChondrin
DActin
Question 20

Without which corpuscles blood clotting is not possible______.

AErythrocytes
BThrombocytes
CPlasmocytes
DLeucocytes

Animal Tissue – 03

Question 1

Mammary gland is a modified______.

AEndocrine gland
BEcrine gland
CMerocrine gland
DApocrine gland
Question 2

Mast cells occur in______.

ANervous tissue
BConnective tissue
CEpithelial tissue
DSkeletal tissue

 

Question 3

Mast cells of connective tissue contain______.

AVasopressin and relaxin
BHeparin and histamine
CHeparin and calcitonin
DSerotonin and melanin
Question 4

Myoglobin is found in______.

AWhite fibre
BRed fibre
CYellow fibre
DAll of them

 

Question 5

Myoglobin occurs in______.

ALiver
BBlood
CMuscles
DSpleen
Question 6

The junction of two neurons is called

ASynapse
BRelay
CSynapsis
DConduction zone

 

Question 7

New blood cells are formed in ______.

AAdipose cells
BBone marrow
CLiver
DMatrix
Question 8

Notochord develops from embyronic layer______.

AEctoderm
BMesoderm
CEndodem
DBoth (A) and (B)

 

Question 9

Oesophagus, stomach and intestine are lined with______.

ATransitional epithelium
BStriated columnar epithelium
CSimple columnar epithelium
DSimple squamous epithelium
Question 10

Processes of osteoblasts are called______.

ADendrite
BLamella
CCanaliculae
DHaversian canal

 

Question 11

Pseudo-stratified epithelium is present in

AKidney
BUrinary bladder
CLarynx
DTrachea
Question 12

RBC was kept in a solution, in few minutes it got burst, the solution was______.

AHypertonic
BIsotonic
CHypotonic
DCane sugar solution

 

Question 13

Red pulp and white pulp are histological structure found in______.

ATooth
BSpleen
CBone
DSkeletal muscle
Question 14

Transitional epithelium is found in

AUrinary bladder
BLarynx
CTrachea
DKidney

 

Question 15

Sarcolemma is a membrane found over______.

ANerve libre
BCardiac muscle
CMuscle libre
DHeart
Question 16

Sarcomere is the distance between______.

AZ line and A band
BTwo Z lines
CI band and H zone
DA and I bands

 

Question 17

Schwann cell is found around______.

AAxon
BCyton
CDendrite
DDendron
Question 18

Secretion of sebaceous gland is______.

AHolocrine
BApocrine
CEcrine
DMerocrine

 

Question 19

The structural and functional unit of the striated muscle fibre is called

AZ-band
BMyofibril
CSarcoplasm
DSarcomere
Question 20

The efferent process of neuron is called:

ADendrite
BAxon
CCyton
DDendron

Animal Tissue – 04

Question 1

Skeletal muscles are______.

AEndodermal in origin
BEctodermal in origin
CMesodermal in origin
DAll of them
Question 2

Smooth muscles are______.

AInvoluntary, spindle shaped, uninucleated, tapering
BVoluntary, multinucleate, cylindrical
CInvoluntary, cylindrical, multinucleate
DVoluntary, branched, uninucleate

 

Question 3

Stratum germinativum is derived from______.

AFlat cells
BCiliated cells
CColumnar cells
DCuboidal cells
Question 4

The longitudinal channels of bone are called:

ABone marrow
BHaversian canals
CMarrow cavity
DLacunae

 

Question 5

Striated muscles occur in______.

AUrinary bladder
BAlimentary canal
CSkeletal muscles
DNone of these
Question 6

The cells primarily involved in immune mechanism are______.

AEosinophils
BThrombocytes
CLymphocytes
DErythrocytes

 

Question 7

The white fibres are chemically formed of

AActin
BCollagen
CMyosin
DElastin
Question 8

The cells that line the tubules of the kidneys are ______.

AFlat
BCiliated
CColumnar
DCuboidal

 

Question 9

The functional unit of contractive system in striated muscle is______.

ACross bridges
BMyofibril
CSarcomere
DZ-band
Question 10

The junction of an axon and dendrite is called______.

ARelay
BSynapse
CConduction zone
DCyton

 

Question 11

The plasma without fibrinogen and other clotting factors is called:

ABlood
BSerum
CAnti-serum
DLymph
Question 12

The most appropriate definition for neuroglial cells is that they are______.

ANonsensory supporting cells
BSecretory cells
CSensory cells
DSensory and supporting cells

 

Question 13

The muscles in the eye associated with pupil are______.

AUnstriated and involuntary
BStriated and voluntary
CStriated and involuntary
DUnstriated and voluntary
Question 14

The receptors found in the muscles, tendons and joints are______.

ATeloreceptiors
BProprioceptors
CInteroceptors
DThermoreceptors

 

Question 15

Which one of the following is largest in size

AMonocyte
BBasophil
CLymphocyte
DNeutrophil
Question 16

This is not the cell of areolar tissue______.

AMacrophage
BSchwann cell
CPlasma cell
DAdipose cell

 

Question 17

This one is the characteristic of epithelial tissues.

AThese cells never produce glands
BThese cells have a rapid rate of cell division
CThese tissues are highly vascularised
DLarge intercellular spaces are seen between the cells.
Question 18

Transitional epithelium occurs in______.

AKidney
BVein
CRenal pelvis and ureter
DLarynx

 

Question 19

The basic contractile unit of muscle is ______.

ASarcomere
BMyofibril
CZ-band
DH-band
Question 20

Nissl’s granules are found in ______ cells.

ANerve
BCartilage
CMuscle
DBone

Cells: The basic unit of life – MCQ Quiz – 1

Question 1

Cell was discovered by

ALeeuwenhoek
BRobert Hooke
CRobert Swanson
DRobert Brown
Question 2

The spherical structured organelle that contains the genetic material is

ACell walls
BRibosomes
CNucleus
DMitochondria

 

Question 3

Protoplasm found inside the nucleus is known as

AAmyloplast
BNucleoplasm
Ccytoplasm
DElaioplast
Question 4

Which of the following statements are true about Endoplasmic Reticulum? (a) Smooth Endoplasmic Reticulum makes lipids. (b) It is also called the control center of the cell. (c) It processes carbohydrates. (d) It modifies chemicals that are toxic to the cell.

A(a), (b) and (c)
B(a), (c) and (d)
Conly (a) and (d)
Dall are correct

 

Question 5

Prokaryotic genetic system has

ADNA but no histones
BBoth DNA and histones
CNeither DNA nor histones
DEither DNA or histones
Question 6

Which of the following statements are true about Eukaryotes? (a) They are cells with a nucleus. (b) They are found both in humans and multicellular organisms. (c) Endoplasmic reticulum is present in Eukaryotes. (d) They have chemically complexed cell wall.

A(a), (b) and (c)
B(a), (c) and (d)
C(a), (b) and (d)
Dall are correct

 

Question 7

A genophore (nucleoid) consists of

AHistone and RNA
BA single double stranded DNA
CA single stranded DNA
DHistone and non-histone
Question 8

Which one of the following organelles digests the old organelles that are no longer useful to the cells?

ARibosomes
BMitochondria
CLysosomes
DChromatin

 

Question 9

Plasmodesmata are located in narrow areas of _______.

ACell walls
BProtoplasm
CCellulose
DNuclei
Question 10

Cell sap is a

ALiving content of the cell
BNon living content of the vacuole
CNon-living content of the protoplasm
DLiving content of the cytoplasm

 

Question 11

What do prokaryotic cells lack?

ACell membrane
BCytoplasm
CCell wall
Dmembrane-bound nucleus
Question 12

Which of the following is an example of cell devoid of nuclear membrane and mitochondria is

ABacterial cell
BSperm
CProtist
DSponge cell

 

Question 13

Lampbrush chromosomes are seen in

AProphase
BMitotic metaphase
CMitosis
DMeiotic prophase
Question 14

Which one of the following is not considered as a part of the endomembrane system?

AVacuole
BLysosome
CGolgi complex
DPeroxisome

 

Question 15

Animal cell differs from plant cells in possessing

APlastid
BGolgi body
CVacuole
DCentrosome

Cells: The basic unit of life – MCQ Quiz – 2

Question 1

Carbohydrates present in the plasmalemma are in the form of

Acellulose
Bhemicellulose
Cstarch
Dglycolipids and glycoproteins
Question 2

Cell organelles are embedded in

ANucleolus
BCytoplasm
CProtoplasm
DMitochondria

 

Question 3

Cellular totipotency means

ASynthesis of new cells
BFormation of new plants
CFormation of new species
DCapability of a plant cell to form complete plant
Question 4

Compare the statements A and B. Statement A : Sclerenchyma cells do not have plasmodesmata. Statement B : The cell walls of some permanent tissues are heavily lignified. Select the correct description :

ABoth the statements A and B are wrong.
BStatement A is correct and B is wrong.
CStatement A is wrong and B is correct.
DBoth the statements A and B are correct.

 

Question 5

Distinction of prokaryotes and eukaryotes is based on

AProteins
BNucleus
CPlasma membrane
DDNA
Question 6

Important site for formation of glycoproteins and glycolipids is

ALysosome
BVacuole
CGolgi apparatus
DPlastid

 

Question 7

In a Golgi complex the structure which is the functional unit is

ACisternae
BThylakoid
CArchoplasm
DCristae
Question 8

In eubacteria, a cellular component that resembles eukaryotic cell is

ACell wall
BPlasma membrane
CNucleus
DRibosomes

 

Question 9

Intact chloroplast from green leaves can be isolated by:

AAcetone
BEthanol
CSucrose solution
DAlcohol
Question 10

Which of the following is considered an exception to cell theory?

AProtists
BMycoplasma
CVirus
DAlgae

 

Question 11

Intracellular compartments do not occur in

AProkaryotes
BLower plants
CEukaryotes
DHigher plants
Question 12

Longest cells in human body are

ALeg muscle cells
BBone cells
CNerve cells
DHeart muscle cells

 

Question 13

Membrane-bound organelles are absent in

APlasmodium
BSaccharomyces
CStreptococcus
DChlamydomonas
Question 14

Mitochondria do not occur in

ABacteria
BGreen Algae
CBrown algae
DRed Algae

 

Question 15

The size of molecules, which can pass through the plasma membrane is

A4 – 15 Å
B25 – 80 Å
C8 – 10 Å
D10 – 35 Å

Cells: The basic unit of life – MCQ Quiz – 3

Question 1

Nuclear matter without envelope occurs in

ABacteria and Green Algae
BBacteria and Cyanobacteria
CCyanobacteria and Red Algae
DMycoplasma and Green Algae
Question 2

The Golgi apparatus

AIs found only in animals
BIs found in prokaryotes
CIs a site of rapid ATP production
DModifies and packages proteins

 

Question 3

Prokaryote is characterized by

ADispersed DNA and lack of membrane bound organelles
BAbsence of nuclear envelope
CAbsence of nucleolus
DAll of these
Question 4

Plasmodesmata transports gibberellic acid in

AProtists
BMycoplasma
CVirus
DAlgae

 

Question 5

Smaller cell is

Aless active metabolically
Bwith larger nucleus
Cwith smaller nucleus
Dmore active metabolically
Question 6

The cytoplasmic connections from cell to cell are known as

Amiddle lamella
Bplasmodesmata
Ccell membrane system
Dendoplasmic reticulum

 

Question 7

The main arena of various types of activities of a cell is

ANucleus
BPlasma membrane
CMitochondria
DCytoplasm
Question 8

The main difference between plant and animal cells is

APlant cells has small vacuoles
BAnimal cell lacks rigid cell wall
CAnimal cells has large vacuoles
DPlant cell lacks rigid cell wall

 

Question 9

The plasma membrane consists mainly of

AProteins embedded in a carbohydrate bilayer
BPhospholipids embedded in a protein bilayer
CProteins embedded in a phospholipid bilayer
DProteins embedded in a polymer of glucose molecules
Question 10

The suffix ‘S’ in ribosome unit indicates

ASolubility
BSedimentation coefficient
CSurface Area
DSize

 

Question 11

Tonoplast, also called vacuolar membrane is a differentially permeable membrane surrounds the ______.

Acytoplasm
Bvacuole
Cnucleus
Dmitochondria
Question 12

Tonoplast is a differentially permeable membrane surrounding the _____.

AVacuole
BCytoplasm
CMitochondria
DNucleus

 

Question 13

What is a genophore?

ADNA in prokaryotes
BDNA and RNA in prokaryotes
CDNA and protein in prokaryotes
DRNA in prokaryotes
Question 14

When a ripe tomato is pricked with a needle a watery fluid comes out. This fluid is stored in

AVacuole
BPlastid
CCytoplasm
DNucleus

 

Question 15

Which one of the following structures between two adjacent cells is an effective transport pathway?

APlasmalemma
BPlasmodesmata
CPlastoquinones
DEndoplasmic reticulum

Cells: The basic unit of life – MCQ Quiz – 4

Question 1

Which one of the following is not a constituent of cell membrane?

APhospholipids
BCholesterol
CGlycolipids
DProline
Question 2

Purines possess nitrogen at

A1, 2, 4 and 6 position
B1, 3, 5 and 7 position
C1, 3, 7 and 9 position
D1, 2, 6 and 8 position

 

Question 3

The two polynucleotide chains in DNA are:

ASemiconservative
BParallel
CDiscontinuous
DAntiparallel
Question 4

Phagocytosis and pinocytosis are collectively termed as

AEndocytosis
BSuspension feeding
COmnivores
DMucous trap

 

Question 5

Vital stains are employed to study

ALiving cells
BFrozen tissues
CFresh tissues
DPreserved tissues
Question 6

Which one of the following also acts as a catalyst in a bacterial cell?

A23 sr RNA
B5 sr RNA
Csn RNA
Dhn RNA

 

Question 7

Fluid mosaic model was given by

ARobertson
BSchwann
CDave Donson
DSinger and Nicholson
Question 8

Middle lamella is composed mainly of

AProtein
BHemicellulose
CCarbohydrate
DCalcium pectate

 

Question 9

Plasma membrane is made up of

AProtein, lipid, carbohydrate
BLipid, carbohydrate
CProtein, lipid
DProtein
Question 10

Which one of the following organisms is not an example of eukaryotic cells

AAmoeba proteus
BParamecium caudatum
CEscherichia coli
DEuglena viridis

 

Question 11

Plasmodesmata are

AConnections between adjacent cells
BLignified cemented layers between cells
CLocomotary structures
DMembranes connecting the nucleus with plasmalemma
Question 12

Which one of the following pairs of nitrogenous bases of nucleic acids, is wrongly matched with the category mentioned against it?

AAdenine, Thymine – Purines
BThymine, Uracil – Pyrimidines
CUracil, Cytosine – Pyrimidines
DGuanine, Adenine – Purines

 

Question 13

Keeping in view the ‘fluid mosaic model’ for the structure of cell membrane, which one of the following statements is correct with respect to the movement of lipids and proteins from one lipid monolayer to the other (described as flip-flop movement)?

ANeither lipids, nor proteins can flip-flop
BBoth lipids and proteins can flip-flop
CWhile lipids can rarely flip-flop, proteins can not
DWhile proteins can flip-flop, lipids can not
Question 14

The length of DNA molecule greatly exceeds the dimensions of the nucleus in eukaryotic cells. How is this DNA accommodated?

AThrough elimination of repetitive DNA
BDeletion of non-essential genes
CSuper-coiling in nucleosomes
DDNAse digestion

 

Question 15

Comparing small and large cells, which statement is correct?

ASmall cells have a small surface area per volume ratio
BExchange rate of nutrients is fast with large cells
CSmall cells have a large surface area per volume ratio
DExchange rate of nutrients is slow with small cells

Cells: The basic unit of life – MCQ Quiz – 5

Question 1

Which one of the following does not differ in E.coli and Chlamydomonas?

ACell wall
BCell membrane
CRibosomes
DChromosomal organization
Question 2

Select the correct statement from the following regarding cell membrane

ALipids are arranged in a bilayer with polar heads towards the inner part.
BFluid mosaic model of cell membrane was proposed by Singer and Nicolson.
CNa+ and K+ ions move across cell membrane by passive transport.
DProteins make up 60 to 70% of the cell membrane

 

Question 3

What is true about ribosomes?

AThese are found only in eukaryotic cells
BThese are self-splicing introns of some RNAs.
CThe prokaryotic ribosomes are 80S, where “S” stands for sedimentation coefficient
DThese are composed of ribonucleic acid and proteins.
Question 4

Ribosomal RNA is actively synthesized in :

ANucleoplasm
BRibosomes
CLysosomes
DNucleolus

 

Question 5
  1. Coli about to replicate was placed in a medium containing radio active thymidine for five minutes. Then it was made to replicate in a normal medium. Which of the following observation shall be correct?
ABoth the strands of DNA will be radio active
BOne strand radio active
CEach strand half radio active
DNone is radio active
Question 6

Assertion: A cell membrane shows fluid behaviour.

Reason: A membrane is a mosaic or composite of diverse lipids and proteins.

ABoth Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
BBoth Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
CAssertion is true statement but Reason is false.
DBoth Assertion and Reason are false statements.

 

Question 7

A nucleosome is a portion of the chromonema containing ______.

Aboth DNA and histones
Bonly histones
Cboth DNA and RNA
Donly DNA
Question 8

If a cell has twice as much DNA as in a normal functional cell, it means that the cell ______.

Ahas completed division
Bis preparing to divide
Chas ceased to function
Dhas reached the end of its lifespan

 

Question 9

What is the common point of similarity between DNA and RNA?

ABoth are double stranded
BBoth have identical sugar molecules
CBoth have identical pyrimidine bases
DBoth are polymers of nucleotides
Question 10

Cell wall consists of

ALignin, hemi cellulose, pectin and lipid
BLignin, hemi cellulose, pectin and cellulose
CLignin hemi cellulose, protein and lipid
DHemi cellulose, cellulose, tubulin and lignin

 

Question 11

Cytoskeleton is made up of

AProteinaceous filaments
BCalcium carbonate granules
CCallose deposits
DCellulosic microfibrils
Question 12

Vacuole in a plant cell :

ALacks membrane and contains water and excretory substances
BIs membrane-bound and contains storage proteins and lipids
CIs membrane-bound and contains water and excretory substances
DLacks membrane and contains air

 

Question 13

Polysome is formed by

ARibosomes attached to each other in a linear arrangement
BSeveral ribosomes attached to a single mRNA
CMany ribosomes attached to a strand of endoplasmic reticulum
DA ribosome with several subunits
Question 14

The rough endoplasmic reticulum (RER) in the cells are because of the presence of

AMitochondria associated with ER
BRibosomes on the surface of ER
CVolutin granules on the surface of ER
DSulphur granules on the surface of ER

 

Question 15

Assertion:  Eukaryotic cells have the ability to adopt a variety of shapes and carry out directed movements.

Reason:  There are three principal types of protein filaments-actin filament, microtubules and intermediate filaments, which constitute the cytoskeleton.

ABoth assertion and reason are true and the reason is the correct explanation of the assertion.
BBoth assertion and reason are true but the reason is not the correct explanation of the assertion.
CAssertion is true statement but reason is false.
DBoth assertion and reason are false.

 

Cell Division | Cell cycle: Quiz – 1

Question 1

Which stages of cell division do the following figures A and B represent respectively?

  Fig. A Fig. B
(1)ProphaseAnaphase
(2)MetaphaseTelophase
(3)TelophaseMetaphase
(4)Late AnaphaseProphase
A1 
B2 
C3 
D4 
Question 2 

During oogenesis the cell that is fertilized by a sperm to become an egg is

Aprimary spermatocyte
Bsecondary oocyte
Cprimary oocyte
Dsecondary spermatocyte

 

Question 3

A bivalent consists of

ATwo chromatids and one centromere
BFour chromatids and two centromeres
CTwo chromatids and two centromeres
DFour chromatids and four centromeres
Question 4

A change in the amount of yolk and its distribution in the egg will affect:

AFertilization
BFormation of zygote
CPattern of cleavage
DNumber of blastomeres produced

 

Question 5

Chromosomes can be counted best at the stage of

AMetaphase
BLate anaphase
CTelophase
DLate prophase
Question 6

The stage in which daughter chromosomes move toward the poles of the spindle is

AAnaphase
BMetaphase
CProphase
DTelophase

 

Question 7

Chiasmata are first seen in

APachytene
BZygotene
CLeptotene
DDiplotene
Question 8

Protein subunit found within microtubules is

ACollagen
BTubulin
CMyosin
DDNA

 

Question 9

Balbiani rings occur in

AAutosome
BHeterosome
CLampbrush chromosome
DPolytene chromosome
Question 10

Cell plate grows from

AOne wall to another
BCentre to wall
CWall to centre
DSimultaneously

 

Question 11

Which of the following cellular structures always disappears during mitosis and meiosis?

APlasma membrane
BNucleolus and nuclear envelope
CPlastids
Dnone of these
Question 12

Centromere is a constituent of

ARibosome
BER
CChromosome
DMitochondrion

 

Question 13

Chiasma formation occurs in

APachytene
BZygotene
CLeptotene
DDiplotene
Question 14

Crossing-over results in

ARecombination of linked alleles
BDominance of alleles
CSegregation of alleles
DLinkage between genes

 

Question 15

Cytoplasmic division of a cell is called

ACell plate formation
BCytokinesis
CMitosis
DSynapsis

Cell Division | Cell cycle: Quiz – 2

Question 1

Given below is a schematic break-up of the phases/stages of cell cycle Which one of the following is the correct indication of the stage/phase in the cell cycle?

AA-Cytokinesis
BB-Metaphase
CC-Karyokinesis
DD-Synthetic phase
Question 2

DNA replication takes place during

AS – phase
BG2 – phase
CG1 – phase
DProphase

 

Question 3

During meiosis I, the number of chromosomes is

AHalved
BTripled
CDoubled
DQuadrupled
Question 4

During mitosis ER and nucleolus begin to disappear at

AEarly prophase
BLate prophase
CEarly metaphase
DLate metaphase

 

Question 5

Crossing over occurs in

APachytene
BZygotene
CLeptotene
DDiplotene
Question 6

During which stage the chromosomes first become visible.

AAnaphase
BMetaphase
CProphase
DTelophase

 

Question 7

Exchange of paternal and maternal chromosome material during cell division is

ACrossing over
BBivalent formation
CDyad formation
DSynapsis
Question 8

Haploid complement of chromosome of an organism is

AGenome
BPhenotype
CGenotype
DGenetic system

 

Question 9

During gamete formation, the enzyme recombinase participates during

AProphase-I
BProphase-II
CMetaphase-I
DAnaphase-II
Question 10

In Human secondary spermatocyte how many chromosomes are present?

A45
B23
C30
D15

 

Question 11

Lampbrush chromosomes are observed in

AMitotic prophase
BMitotic metaphase
CMeiotic metaphase
DMeiotic prophase
Question 12

In humans, at the end of the first meiotic division, the male germ cells differentiate into the:

ASpermatogonia
BPrimary spermatocytes
CSecondary spermatocytes
DSpermatids

 

Question 13

In mitosis, nuclear envelope and nucleolus disappear during

AMetaphase
BInterphase
CProphase
DTelophase
Question 14

Meiosis is best seen in

AGamete
BPollen grain
CMicrosporangium
DAnther wall

 

Question 15

Meiosis occurs for the human female in ______.

APancreas
BLiver
COvary
DKidney

 

Biomolecules: MCQs Quiz – 01

Question 1

The curve given below show enzymatic activity with relation to three conditions (pH, temperature and substrate concentration). What do both axes (x and y) represent?

 x-axisy-axis
(1)Enzymatic activityTemperature
(2)Enzymatic activitypH
(3)TemperatureEnzyme Activity
(4)Substrate concentrationEnzymatic Activity
AOption (1) 
BOption (2) 
COption (3) 
DOption (4) 
Question 2 

Which one of the following structural formulae of two organic compounds is correctly identified along with its related function?

AA : Lecithin – a component of cell membrane
BB : Adenine – a nucleotide that makes up nucleic acids
CA : Triglyceride – major source of energy
DB : Uracil – a component of DNA

 

Question 3

The ‘‘lock and key’’ model of enzyme action illustrates that a particular enzyme molecule

AMay be destroyed and resynthesised several times
BInteracts with a specific type of substrate molecule
CReacts at identical rates under all conditions
DForms a permanent enzyme-substrate complex
Question 4

One strand of DNA has the following sequence of nucleotide 3’ ATTCGCTAT 5’ so the other strand of DNA has

A5’ TAAGCGATA 3’
B3’ TAAGCGATA 5’
C5’ GACGCGATA 3’
D3’ GACGCGATA 5’.

 

Question 5

With reference to enzymes, which one of the following statements is true?

AApoenzyme = Holoenzyme + Coenzyme
BHoloenzyme = Apoenzyme + Coenzyme
CCoenzyme = Apoenzyme + Holoenzyme
DHoloenzyme = Coenzyme – Apoenzyme
Question 6

Feedback inhibition of enzymes is affected by which of the following

Aenzyme
Bsubstrate
Cend products
Dintermediate end products

 

Question 7

Example of a typical homopolysaccharide is

ALignin
BSuberin
CInulin
DStarch
Question 8

Which of the following is not a conjugated protein?

APeptone
BPhosphoprotein
CLipoprotein
DChromoprotein

 

Question 9

Chitin is a

APolysaccharide
BNitrogenous polysaccharide
CLipoprotein
DProtein
Question 10

Which one is diaminodicarboxylic amino acid?

ACystine
BLysine
CCysteine
DAspartic Acid

 

Question 11

The effectiveness of an enzyme is affected least by

ATemperature
BConcentration of the substrate
COriginal activation energy of the system
DConcentration of the enzyme
Question 12

Which is an organic compound found in most cells?

AGlucose
BWater
CSodium chloride
DOxygen

 

Question 13

Enzymes that catalyse inter-conversion of optical, geometrical or positional isomers are

ALigases
BLyases
CHydrolases
DIsomerases
Question 14

Fluidity of bio-membranes can be shown by

AElectron microscope
BTissue culture
CPhase-contrast microscope
DFluorescence microscope

 

Question 15

The “Repeating Unit” of glycogen is

AFructose
BMannose
CGlucose
DGalactose

Biomolecules: MCQs Quiz – 02

4

4

4

4

4

4

4

4

4

Biomolecules Questions: Online Multiple Choice Questions (MCQs) on Biomolecules – The Chemistry of Life, with answers and Test Reporting. Test No. 2

Biomolecules: MCQs Quiz – 02

Question 1

Given below is the diagrammatic representation of one of the categories of small molecular weight organic compounds in the living tissues. Identify the category shown and the one blank component “X’ in it

 CategoryComponent
(1)NucleotideAdenine
(2)NucleosideUracil
(3)CholesterolGuanin
(4)Amino acidNH2
AOption (1) 
BOption (2) 
COption (3) 
DOption (4) 
Question 2 

Which one of the following is wrong statement?

APhosphorus is a constituent of cell membranes, certain nucleic acids and all proteins
BNitrosomonas and Nitrobacter are chemoautotrophs
CAnabaena and Nostoc are capable of fixing nitrogen in free-living state also
DRoot nodule forming nitrogen fixers live as aerobes under free-living conditions

 

Question 3

Which one is the most abundant protein in the animal world?

ACollagen
BInsulin
CTrypsin
DHaemoglobin
Question 4

The catalytic efficiency of two different enzymes can be compared by the

AMolecular size of the enzyme
BThe pH optimum value
CThe Km value
DFormation of the product

 

Question 5

Which one of the following amino-acids was not found to be synthesized in Miller’s experiment?

AGlutamic acid
BAspartic acid
CGlycine
DAlanine
Question 6

Example of a typical homopolysaccharide is

AInulin
BSuberin
CLignin
DStarch

 

Question 7

Which of the following statements regarding enzyme inhibition is correct?

ACompetitive inhibition is seen when a substrate competes with an enzyme for binding to an inhibitor protein
BNon-competitive inhibitors often bind to the enzyme irreversibly
CCompetitive inhibition is seen when the substrate and the inhibitor compete for the active site on the enzyme
DNon-competitive inhibition of an enzyme can be overcome by adding large amount of substrate
Question 8

Enzymes, vitamins and hormones can be classified into a single category of biological chemicals, because all of these

AAre exclusively synthesized in the body of a living organism as at present
Benhance oxidative metabolism
CAre conjugated proteins
DHelp in regulating metabolism

 

Question 9

Carbohydrates, the most abundant biomolecules on earth, are produced by

AFungi, algae and green plants cells
BAll bacteria, fungi and algae
CSome bacteria, algae and green plant cells
DViruses, fungi and bacteria
Question 10

The given graph shows the effect of substrate concentration on the rate of reaction of the enzyme green gram-phosphatase. What does the graph indicate?

AThe rate of enzyme reaction is directly proportional to the substrate concentration
BPresence of an enzyme inhibitor in the reaction mixture
CFormation of an enzyme-substrate complex
DAt higher substrate concentration the pH increases

 

Question 11

The figure given below shows three velocity-substrate concentration curves for an enzyme reaction. What do the curves a, b and c depict respectively?

Aa-normal enzyme reaction, b-competitive inhibition, c-non-competitive inhibition
Ba-enzyme with an allosteric modulator added, b-normal enzyme activity, c-competitive inhibition
Ca-enzyme with an allosteric stimulator, b-competitive inhibitor added, c-normal enzyme reaction
Da-normal enzyme reaction, b-non-competitive inhibitor added, c-allosteric inhibitor added
Question 12

In which one of the following sets of three items each belong to the category mentioned against them?

ALysine, glycine, thiamine — Amino acids
BMyosin, oxytocin and gastric — Hormones
CRennin, helicase and hyaluronidase — Enzymes
DOptic nerve, oculomotor, vagus — Sensory nerves

 

Question 13

Assertion: Arachidic acid is an unsaturated fatty acid.

Reason: There are one or more double bonds between carbon atoms in unsaturated fatty acids.

ABoth Assertion and Reason are true and Reason is the correct explanation of the Assertion.
BBoth Assertion and Reason are true but the Reason is not the correct explanations of Assertion.
CAssertion is true, but Reason is false.
DBoth Assertion and Reason are false.
Question 14

Assertion:  A coenzymes  or  metal  ions  that  is  very  tightly  bound  to  enzyme  protein  is called prosthetic group.

Reason: A complete, catalytically active enzyme together with its bound prosthetic group is called apoenzyme.

ABoth Assertion and Reason are true and Reason is the correct explanation of the Assertion.
BBoth Assertion and Reason are true but the Reason is not the correct explanations of Assertion.
CAssertion is true, but Reason is false.
DBoth Assertion and Reason are false.

 

Question 15

Given below are two statements A and B. Choose the correct answer related to the statements.

Statement A – Amino acids are amphoteric in their function.

Statement B – All amino acids are necessary for our body.

AStatement A is wrong, statement B is correct
BBoth the statements A and B are wrong
CStatement A is correct, statement B is wrong
DBoth the statements A and B are correct

Enzyme: MCQs Quiz – 1

Question 1

The general mechanism is that an enzyme acts by

Areducing the energy of activation
Bincreasing the energy of activation
Cdecreasing the pH
Dincreasing the pH
Question 2

The coenzyme is

Aoften a metal
Balways a protein
Coften a vitamin
Dalways an inorganic compound

 

Question 3

An enzyme that joins the ends of two strands of nucleic acid is

Apolymerase
Bligase
Csynthetase
Dhelicase
Question 4

Which of the following is produced with the combination of apoenzyme and coenzyme?

AHoloenzyme
BEnzyme substrate complex
CProsthetic group
DEnzyme product complex

 

Question 5

An example of competitive inhibition of an enzyme is the inhibition of

Asuccinic dehydrogenase by malonic acid
Bcytochrome oxidase by cyanide
Chexokinase by glucose-6-phosphate
Dcarbonic anhydrase by carbon dioxide
Question 6

Blocking of enzyme action by blocking its active sites is

Aallosteric inhibition
Bfeedback inhibition
Ccompetitive inhibition
Dnon-competitive inhibition

 

Question 7

Diastase takes part in digestion of ______.

AProtein
BStarch
CAmino acids
DFat
Question 8

Enzyme catalyzing rearrangement of atomic groupings without altering molecular weight or number of atoms is

Aligase
Bisomerase
Coxidoreductase
Dhydrolase

 

Question 9

Enzyme complex involved in alcoholic fermentation is

AZymase
BInvertase
CLipase
DAmylase
Question 10

Zymogen or proenzyme is a

AModulator
BVitamin
CEnzyme precursor
DHormone

 

Question 11

Enzymes are basically made up of

AFats
BProteins
CNucleic acids
DVitamins
Question 12

Catalysts are different from enzymes in

Afunctional at high temperature
Bnot used up in reaction
Cbeing proteinaceous
Dhaving high rate diffusion

 

Question 13

Enzymes are polymers of

AHexose sugar
BAmino acids
CFatty acids
DInorganic phosphate
Question 14

The enzyme which hydrolyses starch to maltose is

Aprotease
Bamylase
Clactase
Dmaltase

 

Question 15

Value needed for enzyme action is ______.

ALow Km
BLow Ki
CHigh Km
DHigh Ki

Enzyme: MCQs Quiz – 2

Question 1

Enzymes are sensitive to

Acold
Bcell wall
Cheat
Dpressure
Question 2

Specificity of protein in enzyme action depends upon

AActive sites
BKm constant
CLinear sequence of amino acids
DTurn over number

 

Question 3

ELISA tests are used to

AIsolate DNA sequence
BPurity proteins
CSeparate viral RNA
DIdentify specific proteins
Question 4

In which of the following organisms enzymes are absent

AFungi
BViruses
CAlgae
DBacteria

 

Question 5

Enzymes exist in the cells as

ASolution
BCrystals
CSolids
DColloids
Question 6

Enzymes functional inside the cells are called

Aendoenzymes
Bexoenzymes
Capoenzymes
Disoenzymes

 

Question 7

Enzymes having slightly different molecules structure but performing identical activity are

AApoenzymes
BIsoenzymes
CHoloenzymes
DCoenzymes
Question 8

Enzymes, vitamins and hormones are common in

AEnhancing oxidative metabolism
BBeing synthesised in the body of organisms
CBeing proteinaceous
DRegulating metabolism

 

Question 9

Which of the following influence feedback inhibition of enzyme?

AEnd product
BExternal factors
CEnzyme
DSubstrate
Question 10

Hydrolysis of starch occurs with the help of

APeptidase
BAmylase
CSucrose
DLipase

 

Question 11

In a cell, digestive enzymes mostly occur in

AMitochondria
BLysosomes
CRibosome
DPlastids
Question 12

A protein having both structural and enzymatic traits is

ACollagen
BTrypsin
CMyosin
DActin

 

Question 13

Km value of enzyme is substrate concentration at

A1/2 V max
B2 V max
C1/4 V max
D4 V max
Question 14

One common example of feedback inhibition would be ______.

AAllosteric inhibition of hexokinase by glucose-6-phosphate
BReaction between succinic dehydrogenase and succinic acid
CCyanide and cytochrome reaction
DSulfa drugs and folic acid synthesis in bacteria

 

Question 15

NADP+ is

AEnzyme activator
BIon carrier
CHydrogen acceptor
DElectron acceptor

Enzyme: MCQs Quiz – 3

Question 1

The first enzyme to be purified and crystallized was

AUrease
BDiastase
CInsulin
DZymase
Question 2

Beadle and Tatum showed that each kind of mutant bread mould they studied lacked a specific enzyme. Their experiments demonstrated that

ACells need specific enzymes in order to function
BGenes are made of DNA
CGenes carry information for making proteins
DEnzymes are required to repair damaged DNA information

 

Question 3

Many enzymes are secreted in inactive form to protect

ACell Membrane
BMitochondria
CCell proteins
DCell DNA
Question 4

Most of the members of vitamin B complex act as

ACofactor
BCoenzyme
CProsthetic group
DApoenzyme

 

Question 5

Restriction endonuclease is employed for

ACutting RNA
BCutting single stranded DNA
CCutting double stranded DNA
DJoining strands of DNA
Question 6

Restriction endonucleases are enzymes which

ARemove nucleotides from the ends of the DNA molecule
BMake cuts at specific positions within the DNA molecule
CRecognize a specific nucleotide sequence for binding of DNA ligase
DRestrict the action of the enzyme DNA polymerase

 

Question 7

Ribozyme is

ARNA without phosphate
BRNA with sugar
CRNA with enzyme activity
DRNA with extra phosphate
Question 8

The activity of succinate dehydrogenase is inhibited by

AGlycolate
BPyruvate
CMalonate
DPhosphoglycerate

 

Question 9

The enzyme responsible for the reduction of molecular nitrogen to the level of ammonia in the leguminous root nodule is

Anitrogenase
Bnitrate reductase
Cnitrite reductase
Dall of the above
Question 10

The non protein part of an enzyme is known as

AHoloenzyme
BVitamin
CApoenzyme
DProsthetic group

 

Question 11

The polypeptide or protein part of the enzyme is called

AApoenzyme
BHoloenzyme
CProsthetic group
DZymogen
Question 12

Turn over number of an enzyme is dependent upon

ASize of enzyme
BMolecular weight of enzyme
CActive sites
DConcentration of substrate

 

Question 13

Which one of the following is resistant to enzyme action?

ALeaf cuticle
BCork
CWood fibre
DPollen exine
Question 14

Which one of the following pairs is wrongly matched?

ATextile – amylase
BDetergents – lipase
CAlcohol – nitrogenase
DFruit juice – pectinase

 

Question 15

Which one of the following statements is true with reference to enzymes?

AApoenzyme = Holoenzyme + Coenzyme
BHoloenzyme = Apoenzyme + Coenzyme
CCoenzyme = Apoenzyme + Holoenzyme
DHoloenzyme = Coenzyme – Apoenzyme

 

Digestive system and Nutrition: Quiz – 1

Question 1

Enterokinase occurs in

ASalivary juice
BGastric juice
CIntestinal juice
DPancreatic juice
Question 2

Which one of the following pairs is not correctly matched?

AVitamin B12 – Pernicious anaemia
BVitamin B1 – Beriberi
CVitamin B2 – Pellagra
DVitamin C – Scurvy

 

Question 3

Bile helps in digestion of fats through

ABreaking fat into small pieces
BEmulsification
CForming muscles
Dnone of these
Question 4

Bile secretion occurs in the proportion of

AAmount of protein in food
BAmount of fat in food
CAmount of carbohydrate in food
DUncertain

 

Question 5

If a patient is advised to take more meat, butter milk and eggs in his diet. The person is

ASuffering from rickets
BCan not see in the dark
CSuffering from scurry
DSuffering from Kwashiorkor disease
Question 6

Correct enzyme-substrate pair is

AMaltose-lactase
BProtein-amylase
CCarbohydrate-lipase
DCasein-rennin

 

Question 7

A pair of small lymphatic tissue present at the sides of root tongue is called as

AEpiglottis
BTonsils
CThyroid
DAdenoids
Question 8

A triglyceride molecule has

AThree fatty acids with one glycerol molecule
BOne fatty acid with one glycerol molecule
CThree fatty acids with two glycerol molecules
DOne fatty acid with three glycerol molecule

 

Question 9

Anxiety and eating spicy food together in an otherwise normal human, may lead to

ADiarrhoea
BVomiting
CIndigestion
DJaundice
Question 10

Aneurin is the other name for

AVitamin B2
BVitamin B6
CVitamin B12
DVitamin B1

 

Question 11

Bilirubin and biliverdin are present in

APancreatic juice
BSaliva
CBile
DIntestinal juice
Question 12

Brunner’s glands are found in

AMucosa of oesophagus
BMucosa of stomach
CSubmucosa of duodenum
DMucosa of ileum

 

Question 13

Brush-border enzymes are found in

Aphagocytic vesicles
Bmicrovilli
Czymogen granules
Dgoblet cells
Question 14

Calcium deficiency in the body can be found due to absence of

AVitamin C
BVitamin B
CVitamin D
DVitamin E

 

Question 15

Calcium occurs in

ACells of respiratory system
BBones and teeth
CAll body cells
D3% of mineral content

Digestive system and Nutrition: Quiz – 2

Question 1

Copper deficiency causes

AAnaemia and damages to CNS
BPellagra
CXerophthalmia
DInfluenza
Question 2

Crypts of lieberkuhn secrete

ASuccus entericus
BPtyalin
CCholecystokinin
DCellulases

 

Question 3

Deamination occurs in liver to

Amake use of excess amino acid
Bsynthesis amino acids
Cget rid of urea from blood
Dconvert proteins to urea and uric acid
Question 4

Deficiency of vitamin C can lead to

Adermatitis
Blips fissure
Cscurvy
Drickets

 

Question 5

Deficiency of vitamin D can lead to

Adermatitis
Blips fissure
Cscurvy
Drickets
Question 6

Digestion of starch takes place in

ABuccal cavity and esophagus
BBuccal cavity and duodenum
CStomach and duodenum
DDuodenum only

 

Question 7

Which vitamin can be synthesized by bacteria inside gut?

AVitamin B1
BVitamin C
CVitamin K
DVitamin D
Question 8

Duct leading from parotid gland and opening into vestibule is

AWolffian duct
BStenson’s duct
CHaversian duct
DInfra-orbit duct

 

Question 9

During prolonged fasting, in what sequence are the following organic compounds used up by the body?

AFirst carbohydrates, next proteins and lastly lipids
BFirst carbohydrates, next fats and lastly proteins
CFirst fats, next carbohydrates and lastly proteins
DFirst proteins next lipids and lastly carbohydrates
Question 10

Emulsification of fat occurs by

ABile salts
BPancreatic juice
CBile pigments
DSuccus entericus

 

Question 11

Epithelial cells of intestine involved in food absorption have on their surface

AZymogen granules
BPhagocytic vesicles
CPinocytic vesicles
DMicrovilli
Question 12

Excessive intake of alcohol causes

ALiver cirrhosis
BDermatitis
CJaundice
DLung fibrosis

 

Question 13

Gastric juice contains

APepsin, HCl
BPepsin, Trypsin
CPepsin, Renin
DNone of these
Question 14

Which one of the following pairs of food components in humans reaches the stomach totally undigested?

AStarch and cellulose
BProtein and starch
CStarch and fat
DFat and cellulose

 

Question 15

Hydrolytic enzymes occur in

ARibosomes
BLysosomes
CER
DGolgi body

Digestive system and Nutrition: Quiz – 3

Question 1

Excess Intake of which of the following vitamins can cause ‘Hyperkeratosis’?

AVitamin C
BVitamin B12
CVitamin A
DVitamin K
Question 2

Emulsification of fat takes place through

ALiver enzymes
BBile pigments
CBile salts
DEnzymes of small intestine

 

Question 3

Enterokinase converts

APepsinogen into pepsin
BProtein into polypeptide
CTrypsinogen into trypsin
DAll of these
Question 4

In glycolysis ultimately

Astarch is converted into glucose
Bglucose is converted into fructose
Cprotein is converted into glucose
Dglucose is converted into pyruric acid

 

Question 5

When breast feeding is replaced by less nutritive food low in proteins and calories; the infants below the age of one year are likely to suffer from

APellagra
BMarasmus
CRickets
DKwashiorkor
Question 6

In the absence of enterokinase, the digestion of _______ would be affected in our intestine.

AAmino acid
BAlbumin
CStarch
DMaltose

 

Question 7

Which cells in liver act as phagocytes?

AAcinar cells
BHensen’s cells
CKupffer cells
DDieter cells
Question 8

Keratinization of the skin is prevented by

AVitamin D
BVitamin A
CVitamin B
DVitamin C

 

Question 9

Intestinal villi are mainly connected with

ASecretion
BAbsorption
CAssimilation
DUltra-filtration
Question 10

Lecithin is

AFat
BSteroid
CPhospholipid
DProtein

 

Question 11

In duodenum the enzyme which breaks down starch to maltose is

Amaltase
Btrypsin
Clipase
Dpancreatic amylase
Question 12

Lipase acts on

ATriglycerides
BProteins
CStarch
DAll of these

 

Question 13

Main difference between brown fat and white fat is that the cells of brown fat

AAre polygonal in shape
BHave more mitochondria
CAre multi colored
DAll of these
Question 14

Which of the following is un-matching pair?

AKidney – nephron
BLiver – hepatocytes
CPancreas – Glisson’s capsule
DStomach – cardiac glands

 

Question 15

Oxyntic cells in stomach secrete

AHCl
BMucus
CPepsin
DRenin

Digestive system and Nutrition: Quiz – 4

Question 1

Which of the following is required for the development of erythrocytes?

AVitamin E
BVitamin K
CVitamin B12
DVitamin A
Question 2

Peyer’s patches found in the small intestine are

AEpithelial tissue
BGlandular tissue
CLymphatic tissue
DHaemopoietic tissue

 

Question 3

Ptyalin is

AStrongly acidic
BSlightly neutral
CSlightly acidic
DStrongly alkaline
Question 4

Rickets can be prevented by taking

ACalciferol
BGreen vegetables
CCarrots
DOranges

 

Question 5

Seminal plasma in humans is rich in

AFructose and certain enzymes but poor in calcium
BFructose, calcium and certain enzymes
CFructose and calcium but has no enzymes
DGlucose and certain enzymes but has no calcium
Question 6

Surgical removal of gall bladder in human beings would lead to

AJaundice
BIncreased acidity in the intestine
CImpairment of the digestion of fat
Dnone of these

 

Question 7

Sweetest sugar is

AFructose
BSucrose
CGlucose
DLactose
Question 8

Tadpole is

AOmnivorous
BHerbivorous
CCarnivorous
DSanguivorous

 

Question 9

Taste buds for bitter taste are found on tongue at

Aposterior part
Bon basal surface
Ctip
Dlateral sides
Question 10

The absorption of glycerol, fatty acids and monoglycerides takes place by the

ALymph vessels within the villi
BColon
CCapillaries within the villi
DWall of the stomach

 

Question 11

The catalytic efficiency of two different enzymes can be compared by the

AMolecular size of enzyme
BKm value
CpH optimum value
DFormation of the product
Question 12

Name the substance which is not a product formed in the small intestine?

Aamino acids
BLipids
CLipoproteins
Dproteins

 

Question 13

The cells in the wall of intestine are stimulated to produce secretin by

ACholecystokinin
BAcid in chyme
CBile juice
DGastrin
Question 14

The characteristics Brunner’s glands found in duodenum secrete hormones:

AKinase, estrogen
BSecretin, cholecystokinin
CProlactin, parathormone
DEstradiol, progesterone

 

Question 15

Secretin stimulates production of

ABile
BGastric juice
CSaliva
DPancreatic juice

Organ that produces bile is ______.

Apancreas
Besophagus
Cliver
Dstomach
Question 2

The component in bile which helps to emulsify fat in the duodenum is

Abile salts
Bbiliverdin
Cbilirubin
Dcholesterol

 

Question 3

The HCl in gastric juice converts:

ADisaccharide to monosaccharide
BPepsinogen to pepsin
CProrennin to rennin
DPolypeptide to peptide
Question 4

Enzymes that is found on the mucosa of the intestinal villi is

Apeptidase
Btrypsin
Camylase
Dlipase

 

Question 5

Which factor is required for maturation of erythrocytes?

AVitamin A
BVitamin B12
CVitamin C
DVitamin D
Question 6

The hardest substance in the vertebrate body is

AKeratin
BChondrin
CDentine
DEnamel

 

Question 7

The glucose is converted into glycogen in liver and stored in

ALiver and spleen
BLiver and muscle
CLiver
DSpleen and muscles
Question 8

The main cause of anaemia is

ADeficiency of Ca
BDeficiency of Na
CDeficiency of Fe
DDeficiency of Mg

 

Question 9

The movements in the gut wall are known as

AMetachronal
BDiastole
CSystole
DPeristalsis
Question 10

Which enzyme is used in alcoholic fermentation of yeast?

AMaltase
BInvertase
CSucrase
DZymase

 

Question 11

The pH scale is used to measure

AElectric charge on ion
BSpeed with which ions form
CSize of ions
DConcentration of hydrogen ions in a solution
Question 12

Which one of the following statements is true regarding digestion and absorption of food in humans?

AAbout 60% of starch is hydrolysed by salivary amylase in our mouth
BOxyntic cells in our stomach secrete the proenzyme pepsinogen
CFructose and amino acids are absorbed through intestinal mucosa with the help of carrier ions like Na+
DChylomicrons are small lipoprotein particles that are transported from intestine into blood capillaries

 

Question 13

The vitamin essential for blood clotting is

AVitamin A
BVitamin D
CVitamin B
DVitamin K
Question 14

Enzymes that is found on the mucosa of the intestinal villi is

Apeptidase
Btrypsin
Camylase
Dlipase

 

Question 15

To prevent entry of food into the trachea the opening is guarded by

AEpiglottis
BHard palate
CGlottis
DSoft palate

Digestive system and Nutrition: Quiz – 5(b)

Question 1

Sericteries are modified ______.

Aintestinal glands
Bendocrine glands
Cgastric glands
DSalivary glands
Question 2

Angiotensinogen is a protein produced and secreted by

ALiver cells
BEndothelial cells (cells lining the blood vessels)
CMacula densa cells
DJuxtaglomerular (JG) cells

 

Question 3

Which one of the followings is a fat-soluble vitamin and its related deficiency disease?

ARetinol – Xerophthalmia
BAscorbic acid – Scurvy
CCalciferol – Pellagra
DCobalamin – Beri-beri
Question 4

The main function of lacteals in the villi of human small intestine is the absorption of______.

AWater and mineral salts
BAmino acids and glucose
CGlucose and vitamins
DFatty acids and glycerol

 

Question 5

Continued consumption of a diet rich in butter, red meat and eggs for a long period may lead to

Aurine laden with ketone bodies
Bkidney stones
Cvitamin A toxicity
Dhypercholesterolemia
Question 6

Sphincter of Oddi guards

AHepatopancreatic duct
BCommon bile duct
CPancreatic duct
DCystic duct

 

Question 7

Liver is the largest gland in the body and associated with various functions. Choose the incorrect one from the followings.

AProcesses and stores nutrients
BInvolved in blood glucose homeostasis
CProduces bile for emulsification of fats
DSecrete hormone called gastric
Question 8

The backflow of faecal matter in the large intestine is prevented by the presence of

Apyloric sphincter
Bsphincter of Oddi
Cileocecal (ileocaecal) valve
Dgastric-oesophageal sphincter

 

Question 9

Match Lit I with List II and choose the correct option

List IList II
(a)Salivary amylase(i)Proteins
(b)Bile salts(ii)Milk proteins
(c)Renin(iii)Starch
(d)Pepsin(iv)Lipids
(e)Steapsin(v)Emulsification of fats
Aa – v, b – iv, c – i, d – ii, e – iii
Ba – ii, b – iii, c – iv, d – v, e – i
Ca – ii, b – iv, c – iii, d – I, e – v
Da – iii, b – v, c – ii, d – i, e – iv
Question 10

Match column I with column II and choose the correct option:

Column IColumn II
(i)Goblet cells(a)Antibacterial agent
(ii)Lysozyme(b)Mucus
(iii)Saliva(c)HCl
(iv)Oxyntic cells(d)Sublingual gland
Ai – a, ii – c, iii – d, iv – b
Bi – b, ii – c, iii – a, iv – d
Ci – d, ii – a, iii – b, iv – c
Di – b, ii – a, iii – d, iv – c

 

Question 11

Read the statements A and B.

  1. A) The human small intestine is the longest portion in the alimentary canal
  2. B) Absorption of digested food requires a very large surface area

Identify the correct choice on the two statements.

AStatements A and B are both correct.
BStatement A is correct, B is wrong.
CStatement B is correct, A is wrong.
DBoth the statements are wrong.
Question 12

Which one of the following pairs of the kind of cells and their secretion of correctly matched?

AOxyntic cells — A secretion with pH between 2.0 and 3.0
BAlpha cells of islets of Langerhans — Secretion that decreases blood sugar level
CKupffer cells — A digestive enzyme that hydrolyses nucleic acids
DSebaceous glands — A secretion that evaporates for cooling

 

Question 13

Match the types of cells listed under column I with the secretions given under column II. Choose the answer which gives the correct combination of the alphabets of the two columns.

Column – I (Types of cells)Column — II (Secretions)
(A)Beta cells(p)Lysozyme
(B)Mast cells(q)Mucus
(C)Paneth cells(r)Histamine
(D)Acinar cells(s)Insulin
(t)Pancreatic enzymes
AA – s, B – r, C – p, D – t
BA – q, B – r, C – p, D – t
CA – s, B – q, C – p, D – t
DA – t, B – q, C – r, D – s
Question 14

Consider the following statements:

(A) Niacin (the anti-pellagra vitamin) is present in meats, fish, peanuts, poultry, fruits and leafy green vegetables.

(B) Crypts of Lieberkuhn are present in the liver

(C) Steapsin is the pancreatic amylase

AA and C correct
BA and C incorrect
CB and C correct
DB and C incorrect

 

Question 15

The following is a scheme showing the fate of carbohydrates during digestion in the human alimentary canal. Identify the enzymes acting at stages indicated as A, B, C and D. Choose the correct option from those given.

AA = Amylase, B = Maltase, C = Lactase, D = Invertase
BA = Amylase, B = Maltase, C = Invertase, D = Lactase
CA = Amylase, B = Invertase, C = Maltase, I) = Lactase
DA = Amylase, B = Lactase, C = Maltase, D = Invertase

Digestive system and Nutrition: Quiz – 6

Question 1

Column I contains names of the sphincter muscles of the alimentary canal and column II contains their locations. Match them properly and choose the correct answer.

 Column I  Column II
ASphincter of ani internuspopening of hepatopancreatic duct into duodenum
BCardiac sphincterqbetween duodenum and posterior stomach
CSphincter of oddirguarding the terminal part of alimentary canal
DIleocaecal sphinctersbetween esophagus and anterior stomach
EPyloric sphinctertBetween small intestine and bowel
AA = r, B = q, C = s, D = p, E = t 
BA = q, B = t, C = p, D = s, E = r 
CA = r, B = s, C = p, D = t, E = q 
DA = s, B = r, C = p, D = q, E = t 
Question 2 

The diagram of large intestine of man is given below. Identify the parts labelled A, B, C, D, E and F.

AA = Caecum, B = Vermiform appendix, C = Sigmoid, D = Ascending colon, E = Transverse colon, F = Descending colon.
BA = Sigmoid, B = Vermiform appendix, C = Ascending colon, D = Transverse colon, E = Descending colon, F = Caecum.
CA = Sigmoid, B = Vermiform appendix, C = Descending colon, D = Transverse colon, E = Ascending colon, F = Caecum.
DA = Caecum, B = Vermiform appendix, C = Ascending colon, D = Transverse colon, E = Descending colon, F = Sigmoid.

 

Question 3

Liver the largest gland is associated with several functions. Which one of the following is stated incorrectly?

AStores glucose as glycogen
BManufactures bile, converts the amino groups to urea
CMakes all the cholesterol that human body needs
DSecrete hormone called gastric
Question 4

Which one of the following statement is not correct about intestinal villi?

AA multitudinous finger-like projections having many microvilli
BIncrease the internal surface area of the intestinal wall.
CSupplied with capillaries and the lacteal vessels
DParticipate only in digestion of fats

 

Question 5

The following list describes four major digestive enzymes. Which one of the following is incorrect?

ASalivary amylase – Salivary glands – Mouth
BPepsin – Gastric glands – Stomach
CNuclease – Small intestine – Stomach
DLipase – Pancreas – Small intestine
Question 6

Carrier ions like Na+ facilitate the absorption of substances like

AFructose and some amino acids
BAmino acids and glucose
CGlucose and fatty acids
DFatty acids and glycerol

 

Question 7

Which one of the following is the correct matching of the site of action on the given substrate, the enzyme acting upon it and the end product?

(1) Stomach:Fats  —Lipase—► micelles
(2) Duodenum:Triglycerides —Trypsin—► monoglycerides
(3) Small intestine:Starch —(α)Amylase—► Disaccharide (Maltose)
(4) Small intestine:Proteins —Pepsin—► Amino acids
A(1)
B(2)
C(3)
D(4)
Question 8

If for some reason our goblet cells are non-functional this will adversely affect

ASmooth movement of food down the intestine
BProduction of somatostatin
CSecretion of sebum from the sebaceous glands
DMaturation of sperms

 

Question 9

What will happen if the secretion of parietal cells of gastric glands is blocked with an inhibitor?

AEnterokinase will not be released from the duodenal mucosa and so trypsinogen is not converted to trypsin
BGastric juice will be deficient in chymosin
CGastric juice will be deficient in pepsinogen
DIn the absence of HCl secretion, inactive pepsinogen is not converted into the active enzyme pepsin.
Question 10

A young infant may be feeding entirely on mother’s milk which is white in colour but the stool which the infant passes out is quite yellowish. What is this yellow colour due to

APancreatic juice poured into duodenum
BIntestinal juice
CBile pigments passed through bile juice
DUndigested milk protein casein

 

Question 11

Bile contribution to digestion is

ANucleic acid metabolism
BPhagocytosis
CEmulsification of dietary lipids
DCarbohydrate digestion
Question 12

Name the hormone that stimulates the secretion of gastric juice.

ARenin
BEnterokinase
CEnterogastrone
DGastrin

 

Question 13

Bile salts act as activator of which enzyme?

APepsinogen
BTrypsinogen
CLipase
DPancreatic amylase
Question 14

Aggregates of lymphoid tissue present in the distal portion of the small intestine are known as

AVilli
BPeyer’s patches
CRugae
DChoroid plexus

 

Question 15

Which one of the followings is not part of the large intestine?

Arectum
Bcolon
Ccecum
Dduodenum

Human Respiratory System: MCQs Quiz – 1

Question 1

Which of the following statements is true about Trachea in a respiratory system?

AIt functions as passages of air to each alveolus
BIt functions for sound production
CIt Acts as passage of air to bronchi
DIt Lowers the surface tension
Question 2

______ lies in front of esophagus.

ATrachea
BGlottis
CLarynx
DEpiglottis

 

Question 3

Chemiosmotic theory of ATP synthesis in the chloroplasts and mitochondria is based on

AMembrane potential
BAccumulation of K ions
CProton gradient
DAccumulation of Na ions
Question 4

Cilia and mucous are found in ______.

ATrachea
BGlottis
CLarynx
DEpiglottis

 

Question 5

Dissociation curve shifts to the right when

ACO2 concentration decreases
BCO2 concentration increases
CO2 concentration decrease
DCL concentration increase
Question 6

Due to breakdown and collapse of ______ lung tissue is destroyed.

Aeustachian tubes
Bbronchioles
Calveoli
Dmicrotrachea

 

Question 7

During expiration the diaphragm becomes

ADome-shaped
BFlattened
CNormal
DOblique
Question 8

During pneumonia which of the following gets accumulated in lung tissue?

ARBC
BFluid WBC
CBlood
DPlasma

 

Question 9

During swallowing of food, ______ is the opening covered by epiglottis.

Atrachea
Bglottis
Clarynx
Depiglottis
Question 10

During which respiration, the respiratory pigment hemoglobin combines with oxygen in the lungs?

AAerobic cellular
BExternal
CInternal
DCirculatory

 

Question 11

Each of the alveolar sac is surrounded by

Acapillaries
Bveins
Carteries
Dprimarily lymphatic ducts
Question 12

Enzyme carbonic anhydrase, in ______ speeds up the reaction.

APlatelets
BLeucocytes
CLymphocytes
DRBCs

 

Question 13

Esophagus opens only during

Aspeaking
Bexhaling
Cinhaling
Dswallowing
Question 14

Exchange of oxygen and carbon dioxide between alveolar air and blood is governed by _______.

Adiffusion
Bblood pressure
Cgravity
Dactive transport

 

Question 15

Hamburger’s phenomenon is also called

AHydrogen shift
BBicarbonate shift
CChloride shift
DSodium shift

Human Respiratory System: MCQs Quiz – 2

Question 1

Hemoglobin retains oxygen and releases it in the ______.

Aheart
Blungs
Cglottis
Dtissues
Question 2

Human nose contains ______ nasal cavities

Aone
Btwo
Cthree
Dfour

 

Question 3

In the human body which concentration is regulated mainly by the kidneys?

Abicarbonate
Bcarbaminohemoglobin
Cdeoxyhemoglobin
Doxyhemoglobin
Question 4

In which of the following restrictive lung disease the vital capacity is reduced to below normal levels.

Apneumonia
Btuberculosis
Cpulmonary fibrosis
Dall of the above

 

Question 5

In which one of the following do the two names refer to one and the same things?

AKrebs cycle and Calvin cycle
BTricarboxylic acid cycle and citric acid cycle
CTricarboxylic acid cycle and urea cycle
DCitric acid cycle and Calvin cycle
Question 6

Lungs are enclosed by

Adiaphragm
Bpleural membranes
Cbronchiole membranes
Dsternum

 

Question 7

Number of lobes in both right land left lungs are respectively

Athree, two
Btwo, three
Ctwo, one
Dthree, three
Question 8

Rheumatic fever can cause damage

AAlveoli of the Lungs
Bheart valves
Cheart muscles
Dpleural membranes function

 

Question 9

The Medullary Respiratory centre is under

ANervous control
BPhysical control
CChemical Control
DElectric control
Question 10

The oxygen dissociation curve is shifted to the right by an increase in ______.

AH+ concentration
BPCO2
Ctemperature
DAll of these

 

Question 11

The primary muscle of inspiration which forms the floor of the thoracic cavity is ______.

Apleural membrane
Bsternum
Cventricle
Ddiaphragm
Question 12

The tube that runs from the middle ear to the pharynx

Aepiglottis
Btrachea
Cglottis
Dauditory tubes

 

Question 13

The tube which leads to the stomach from the throat is

Aesophagus
Btrachea
Cglottis
Dlarynx
Question 14

Voice box or ______ is the portion of the respiratory tract which contains the vocal cords for producing sound.

Atrachea
Bglottis
Clarynx
Depiglottis

 

Question 15

Which one of the followings is the function of Thoracic cavity?

AForms the floor of the thoracic cavity
BEncloses the lungs
CContains the respiratory organs
DNone of these

Human Respiratory System: MCQs Quiz – 3

Question 1

Respiratory center is located in the ________.

APneumotaxic center
BMedulla oblongata
CAlveoli
DApneustic center
Question 2

Bronchi branch into the tubes of smaller diameters (less than 1 mm) known as ______.

AMicrotrachea
BBronchioles
CAlveoli
DEustachian tubes

 

Question 3

What is the instrument that measures the amount of air inhaled and exhaled with each breath?

ASphygmomanometer
BHygrometer
CStethoscope
DSpirometer
Question 4

Which one of the following statements is incorrect regarding the pharynx?

AOrgan of the upper respiratory tract
BConnects to the larynx
CContributes to the production of speech
DComposed of smooth muscle

 

Question 5

Emphysema, a chronic disorder is high in cigarette smokers. In such cases the ______ of the person is/are found damaged.

APlasma membrane
BAlveolar walls
CBronchioles
DRespiratory muscles
Question 6

Asthma is due to

AElasticity of lungs is reduced
BDegradation of alveolar wall
CBronchioles constrict due to muscle spasms
DDamage in diaphragm

 

Question 7

Amount of air in the lungs that remains after deep breathing is called ______.

ADead space
BResidual volume
CVital capacity
DVentilation rate
Question 8

The amount of air a person takes in during normal, restful breathing is called the ______.

ADead space
BTidal volume
CVital capacity
DVentilation rate

 

Question 9

What protects the moist membranes of the respiratory tract?

AMucus and cilia
BA ‘c’ shaped cartilage rings
CA pebbly epidermal surface
DAn acidic glands
Question 10

Bulk of carbon dioxide (CO2) released from body tissues into the blood is present as

A70% carbaminohemoglobin and 30% as bicarbonate
BCarbaminohemoglobin in RBCs
CBicarbonate in blood plasma and RBCs
DFree CO2 in blood plasma

 

Question 11

Which one of the following is NOT correct?

AThe nasal cavity warms and humidifies the air before it enters the lungs.
BThe right lung is composed of three lobes, but the left lung has only two lobes
CLung volumes and vital capacity measure lung function.
DThe visceral pleura is in direct contact with the chest wall.
Question 12

The kind of tissue that forms the supportive structure in our Pinna (external ears) is also found in

ATip of the nose
BVertebrae
CNails
DEar ossicles

 

Question 13

Which two of the following changes (a–d) usually tend to occur in the plain dwellers when they move to high altitudes (3,500 m or more)?

(a) Increase in red blood cell size

(b) Increase in red blood cell production

(c) Increased breathing rate

(d) Increase in thrombocyte count

Changes occurring are

A(a) and (b)
B(b) and (c)
C(c) and (d)
D(a) and (d)
Question 14

Which one of the following statements is NOT correct about primary bronchi?

AThe trachea splits into the primary bronchi
BPrimary bronchi supply air to the right and left lungs
CThese are lined with stratified squamous epithelium
DSupporting cartilage of primary bronchi is plate-like shaped

 

Question 15

The respiratory membrane, through which gas must diffuse, consists of the followings EXCEPT:

AAlveolar cells and endothelial cells of the capillary
BLymphatic vessel basement membrane
CEpithelial basement membrane
DCapillary basement membrane

Human Respiratory System: MCQs Quiz – 4

Question 1

Opening to the trachea is covered by a small flap of tissues termed as the ______.

AGlottis
BTrachea
CEpiglottis
DLarynx
Question 2

The exchange of gases between inhaled air and blood is referred as ______.

ACellular respiration
BExternal respiration
CInternal respiration
DCirculatory respiration

 

Question 3

The maximum volume of air contained in the lung by a full forced inhalation is called

AVital capacity
BTidal volume
CTotal lung capacity
DInspiratory capacity
Question 4

Aerobic respiratory pathway is also termed as ______ pathway.

AAnabolic
BCatabolic
CCreatine phosphate
DAmphibolic

 

Question 5

The maximum volume of air that can be released from the lungs by forceful expiration after deepest inspiration is called the ______.

ATotal lung capacity
BVital capacity
CTidal volume
DVentilation rate
Question 6

Which one is the cofactor of carbonic anhydrase?

ACu
BZn
CFe
DMg

 

Question 7

The trachea divides into two smaller tubes called ______.

ABronchi
BTrachea
CMicrotrachea
DEustachian tubes
Question 8

Listed below are four respiratory capacities (a – d) and four jumbled respiratory volumes of a normal human adult

Respiratory capacitiesRespiratory volumes
(a) Residual volume2500 mL
(b) Vital capacity3500 mL
(c) Inspiratory reserve volume1200 mL
(d) Inspiratory capacity4500 mL

Which one of the following is the correct matching of two capacities and volumes?

A(a) 4500 mL, (b) 3500 mL
B(b) 2500 mL, (c) 4500 mL
C(c) 1200 mL, (d) 2500 mL
D(d) 3500 mL, (a) 1200 mL

 

Question 9

Inner surface of the bronchi, bronchioles and fallopian tubes are lined by

ACubical epithelium
BColumnar epithelium
CSquamous epithelium
DCiliated epithelium
Question 10

Which one of the following statement is NOT correct regarding trachea?

AIt usually lies posterior to the muscular esophagus.
BIt splits into the right and left bronchi to supply air to the lungs
COpening to the trachea is covered by epiglottis.
DTracheal rings are C-shaped

 

Question 11

Which one of the following statements is incorrect?

ATuberculosis is caused by a rod-shaped bacterium, Mycobacterium tuberculosis.
BTuberculosis is highly infectious and can be spread by airborne droplets.
CTuberculosis can’t be treated by antibiotics
DIn Pulmonary Tuberculosis the elasticity of lungs is reduced.
Question 12

Which one of the followings is NOT correct regarding Exhalation (expiration)?

AExpiration is typically a passive process
BExhalation starts when the expiratory muscles relax
CThe elastic properties of the lung help to expel deoxygenated air during exhalation
DDuring exhalation, elastic properties of the lung help to expel deoxygenated air

 

Question 13

Which one of the followings is correct regarding larynx?

AIt prevents foreign objects from entering the trachea
BIt houses the vocal cords
CIt is an organ made of cartilage and connects the pharynx to the trachea
DAll of these are correct.
Question 14

Which one of the following is a possibility for most of us in regard to breathing, by making a conscious effort?

AOne can consciously breathe in and breathe out by moving the diaphragm alone, without moving the ribs at all
BThe lungs can be made fully empty by forcefully breathing out all air from them
COne can breathe out air totally without oxygen
DOne can breathe out air through eustachian tubes by closing both the nose and the mouth

 

Question 15

The figure given below shows a small part of human lung where exchange of gases takes place. In which one of the options given below, the one part A, B, C or D is correctly identified along with its function?

AB : Red blood cell – transport of CO2 mainly
BC : Arterial capillary – passes oxygen to tissues
CA : alveolar cavity – main site of exchange of respiratory gases
DD : Capillary wall – exchange of O2 and CO2 takes place here

Atherosclerosis refers to ailment of

AKidney
BHeart
CLungs
DLiver
Question 2

Which one of the following statements is correct regarding blood pressure?

A190/110 mmHg may harm vital organs like brain and kidney
B130/90 mmHg is considered high and requires treatment
C100/55 mmHg is considered an ideal blood pressure
D105/50 mmHg makes one very active

 

Question 3

A large proportion of oxygen is left unused in the human blood even after its uptake by the body tissues. This O2

AHelps in releasing more O2 to the epithelium tissues
BActs as a reserve during muscular exercise
CRaises the pCO2 of blood to 75 mm of Hg
DIs enough to keep oxyhaemoglobin saturation at 96%
Question 4

A muscular wall is absent in

ACapillary
BVein
CVenule
DArteriole

 

Question 5

Adrenaline directly affects

AOxyntic cells of stomach
BSinoatrial node
CIslet of Langerhans
DDorsal root ganglia of spinal cord
Question 6

All arteries carry oxygenated blood, except

APulmonary artery
BRenal artery
CHepatic artery
DCardiac artery

 

Question 7

An adult human has systolic and diastolic pressures as:

A80 mm Hg and 120 mm Hg
B120 mm Hg and 80 mm Hg
C50 mm Hg and 80 mm Hg
D80 mm Hg and 80 mm Hg
Question 8

In sun our face becomes reddish due to

ABreakup of RBC and release of haemoglobin
BExpansion of blood capillaries
CEffect of light
DIrritation of skin

 

Question 9

Anticoagulant of fresh water leech is

ASodium citrate
BHeparin
CHirudin
DChelating agent
Question 10

Arteries are best defined as the vessels which

ACarry blood from one visceral organ to another visceral organ
BSupply oxygenated blood to the different organs
CCarry blood away from the heart to different organs
DBreak up into capillaries which reunite to form a vein

 

Question 11

Artificial pace maker is transplanted in

AInter auricular septum
BBelow the collar bone
CInter ventricular septum
DRight auricle
Question 12

Average cardiac output is

A5.3 litre/minute
B6.3 litre/minute
C7.3 litre/minute
D4 litre/minute

 

Question 13

Serum is

ABlood without corpuscles and fibrinogen
BLymph without corpuscles
CBlood without fibrinogen
DLymph
Question 14

Blood pressure increases and heart rate decreases in response to

AExposure to high altitude
BExercise
CHemorrhage
DIncreased intracranial pressure

 

Question 15

Blood pressure of a healthy person is

A140 / 60
B120 / 80
C80 / 120
D90 / 60

Circulation of Body Fluids: Quiz – 2

Question 1

Both erythrocytes and leucocytes are formed in

ALymph nodes
BBone marrow
CThymus
DArterial walls
Question 2

Brain completely depends on blood from the supply of

AOxygen and glucose
BOxygen and ATP
COxygen and electrolytes
DGlucose and ATP

 

Question 3

Bundle of His is a network of

ANerve fibres distributed in ventricles
BMuscle fibres found only in the ventricle wall
CMuscle fibres distributed throughout the heart walls
DNerve fibres found throughout the heart
Question 4

‘Bundle of His’ is a part of which one of the following organs in humans?

APancreas
BBrain
CHeart
DKidney

 

Question 5

Cardiac output is defined as the amount of blood

APumped by both ventricles per second
BReceived in heart per minute
CPumped by each ventricle per minute
DPumped by left atrium per minute
Question 6

Christmas disease is also known as

AHaemophilia B
BAIDS
CHaemophilia A
DHaemolytic jaundice

 

Question 7

Major part of the plasma consists of

AOrganic substances
BInorganic substances
CBlood cells
DWater
Question 8

Compared to blood our lymph has

AMore RBCs and less WBCs
BNo plasma
CPlasma without proteins
DMore WBCs and no RBCs

 

Question 9

Diastole occurs due to

ANerve impulse from vagus
BElastic recoil of arteries
CRelaxation of heart muscles
DAll of them
Question 10

During diastole

ABlood leaves ventricle
BBlood leaves heart
CBlood enters in heart
DBlood enters lungs

 

Question 11

During storage of blood anticoagulant added to it may be

ASodium oxalate
BSodium chloride
CPotassium chloride
DThromboplastin
Question 12

Fresh frozen plasma (FFP) does not contain

AFactor VII
BPlatelets
CFrozen protoplasm
DGamma globulins

 

Question 13

Globulins contained in human blood plasma are primarily involved in

AClotting of blood
BDefence mechanisms of body
COsmotic balance of body fluids
DOxygen transport in the blood
Question 14

Graveyard in RBCs is

ALiver
BSpleen
CKidney
DLymph glands

 

Question 15

Haemoglobin oxygen dissociation curve is

AStraight line
BConstant
CSigmoid
DParabolic

Circulation of Body Fluids: Quiz – 3

Question 1

Hardening of the arteries due to deposition of cholesterol is called

ARhinitis
BAtherosclerosis
CThrombosis
DStenosis
Question 2

The most popularly known blood grouping is the ABO grouping. It is named ABO and not ABC because ‘‘O’’ in it refers to having

ANo antigens A and B on RBCs
BOther antigens besides A and B on RBCs
COverdominance of this type on the genes for A and B types
DOne antibody only–either anti–A or anti–B on the RBCs

 

Question 3

Largest amount of urea is normally carried by

AHepatic portal vein
BRenal artery
CHepatic artery
DHepatic vein
Question 4

The kind of epithelium which forms the inner walls of blood vessels is

ASquamous epithelium
BCuboidal epithelium
CColumnar epithelium
DCiliated columnar epithelium

 

Question 5

Heparin is

AAnti-allergic
BBlood diluter
CAnticoagulant
DAntiseptic
Question 6

Murmur is a disorder of

ASA node
BAV node
CHeart valves
DPulmonary vein

 

Question 7

Heparin is produced by

ALiver cells
BPlasma cells
CBlood cells
DSpleen cells
Question 8

Hepatic portal system connects

ALiver to digestive system
BKidney to liver
CDigestive system to liver
DLiver to kidneys

 

Question 9

In a cardiac output of 5250 ml/minute, with 75 heart beats per minute, the stroke volume is

A80 ml
B70 ml
C60 ml
D55 ml
Question 10

In a standard ECG which one of the following alphabets is the correct representation of the respectively activity of the human heart?

AP-depolarisation of atria
BR-repolarisation of ventricles
CS-start of systole
DT-end of diastole

 

Question 11

In a typical heart, if EDV is 120 ml of blood and ESV is 50 ml of blood, the stroke volume (SV) is

A120 – 50 = 70 ml
B120 + 50 = 170 ml
C120 x 50 = 6000 ml
D120 ÷ 50 = 2.4 ml
Question 12

In developing embryo RBCs are formed in

ALymph node
BBone marrow
CLiver
DSpleen

 

Question 13

Oxygenated blood occurs in

APulmonary artery
BRight atrium
CRight ventricle
DPulmonary vein
Question 14

In ECG, P-R interval corresponds to

ATime interval between onset of ventricular contraction
BTime delay in A-V node
CS-A nodal conduction time
DIncreased ventricular contraction

 

Question 15

In higher vertebrates, SA node helps in

AOpening of tricuspid valve
BInitiation of heart beat
CConduction of blood
DOpening of bicuspid valve

Circulation of Body Fluids: Quiz – 4

Question 1

Atrioventricular valves are supported by strands of connective tissue called ______.

Aendocardium
Bmyocardium
Cchordae tendineae
Dcardiac fibers
Question 2

Which one of the followings refers to blood cancer characterized by uncontrolled proliferation of abnormal/immature white blood cells in the bone marrow?

AHypertension
BAtherosclerosis
CLeukemia
DPulmonary embolism

 

Question 3

Consider the following statements about biomedical technologies:

(a) During open heart surgery blood is circulated in the heart-lung machine

(b) Blockage in coronary arteries is removed by angiography

(c) Computerised Axial Tomography (CAT) shows detailed internal structure as seen in a section of body

(d) X-ray provides clear and detailed images of organs like prostate glands and lungs

Which two of the above statements are correct?

A(a) and (b)
B(b) and (d)
C(c) and (d)
D(a) and (c)
Question 4

Given below is the ECG of a normal human. Which one of its components is correctly interpreted below?

APeak P and Peak R together – systolic and diastolic blood pressures
BPeak P – Initiation of left atrial contraction only
CComplex QRS – One complete pulse
DPeak T – Initiation of total cardiac contraction

 

Question 5

Which type of white blood cells are concerned with the release of histamine and the natural anti coagulant heparin?

AMonocytes
BNeutrophils
CBasophils
DEosinophils
Question 6

What is true about RBCs in humans?

AThey do not carry CO2 at all
BThey carry about 20-25 percent of CO2
CThey transport 99.5 percent of O2
DThey transport about 80 percent oxygen only and the rest 20 percent of it is transported in dissolved state in blood plasma

 

Question 7

If due to some injury the chordae tendinae of the tricuspid valve of the human heart is partially non-functional, what will be the immediate effect?

AThe flow of blood into the pulmonary artery will be reduced
BThe flow of blood into the aorta will be slowed down
CThe pacemaker will stop working
DThe blood will tend to flow back into the left atrium
Question 8

The cells lining the blood vessels belong to the category of

AColumnar epithelium
BConnective tissue
CSmooth muscle tissue
DSquamous epithelium

 

Question 9

In humans, blood passes from the post caval to the diastolic right atrium of heart due to:

APressure difference between the post caval and atrium
BPushing open of the venous valves
CSuction pull
DStimulation of the sino auricular node
Question 10

The most active phagocytic white blood cells are:

ANeutrophils and monocytes
BNeutrophils and eosinophils
CLymphocytes and macrophages
DEosinophils and lymphocytes

 

Question 11

To obtain a standard ECG, a patient is connected to the machine with three electrodes

AOne to each wrist and to the left ankle
BOne to each ankle and to the left wrist
COne to each wrist and to the left chest region
DOne to each ankle and to the left chest region
Question 12

The blood does not clot inside the body because of :

AOxygenation of blood
BMovement of blood
CHeparin in blood
DAbsence of fibrinogen in blood

 

Question 13

Which is the correct sequence of arrangement of types of W.B.C. in decreasing order in terms of number per mm3 of human blood?

AEosinophils > Basophils > Neutrophils
BBasophils > Eosinophils > Neutrophils
CNeutrophils > Eosinophils > Basophils
DEosinophils > Neutrophils > Basophils
Question 14

The blood calcium level is lowered by the deficiency of:

ACalcitonin
BParathormone
CThyroxine
DBoth Calcitonin and Parathormone

 

Question 15

The average diameter of Red Blood Corpuscles of man is

A7.2 μm
B8.1 μm
C9.2 μm
D10.3 μm

Excretory Products and their Elimination: MCQs Quiz – 01

Question 1

_______ facilitates reabsorption of water by the nephron.

ALoop of the nephron
BMedulla
CCortex
DPelvis
Question 2

A Brush border is formed in

ADistal convoluted tubule
BProximal convoluted tubule
CBowman’s capsule
DLoop of Henle

 

Question 3

Ability of the kidneys for the production of concentrated urine is dependent on _______.

AActive transport
BPassive transport
CCountercurrent mechanism
DDiffusion
Question 4

Accumulation of urea and other waste substances in the blood is called

AHemodialysis
BCystitis
CUremia
DUrethritis

 

Question 5

Bile manufactured by liver is stored within the ________.

AUrinary bladder
BGallbladder
CLiver
DLungs
Question 6

Certain ions and molecules, for examples H+ and penicillin are secreted from the peritubular capillary network into the _______.

AConvoluted tubules
BPeritubular capillaries
CLoops of Henle
DCollecting ducts

 

Question 7

Correct sequence of urine formation is

AFiltration, reabsorption, secretion
BSecretion, reabsorption, filtration
CReabsorption, secretion, filtration
DReabsorption, filtration secretion
Question 8

Creatinine the waste product closely regulated by the brain and kidneys is the end product of the metabolism of _____.

AAmmonia
BMuscle
CNucleotide
DAnaerobic

 

Question 9

Glomerular capsule and Convoluted tubules always lie within the _______.

ARenal pelvis
BRenal medulla
CRenal cortex
DNone of these
Question 10

Glomerular filtrate passes from glomerular capsule into the ______

ALoop of the nephron
BProximal convoluted tubule
CGlomerular capsule
DConvoluted tubule

 

Question 11

If a man takes large amount of protein, he is likely to excrete more amount of

AGlucose
BUrea and uric acid
CWater
DSalts
Question 12

If a person undergoes a prolonged fasting then his urine will be found to contain higher levels of

AKetones
BAmino acids
CFats
DGlucose

 

Question 13

In the kidneys, osmotic pressure controls ______.

AGlucose absorption
BSodium absorption
CWater absorption
Dnone of these
Question 14

Most of the reabsorption of salts and water occurs in the ______.

ADistal convoluted tubule
BLoops of Henle
CProximal convoluted tubule
DCollecting tubule

 

Question 15

Which one of the following statements is correct with respect to kidney function regulation?

ADuring summer when body loses lot of water by evaporation, the release of ADH is suppressed
BWhen someone drinks lot of water, ADH release is suppressed
CExposure to cold temperature stimulates ADH release
DAn increase in glomerular blood flow stimulates formation of Angiotensin II

Excretory Products and their Elimination: MCQs Quiz – 02

Question 1

The basic functional unit of human kidney is

AHenle’s loop
BNephron
CNephridia
DPyramid
Question 2

Ornithine cycle (also known as the urea cycle) refers to the sequence of biochemical reactions taking place in the

AUrinary bladder
BLiver
CPancreas
DStomach

 

Question 3

The Bowman’s capsules are found in

ACortex
BMedulla
CConvoluted tubule
DLoop of Henle
Question 4

The hollow space at the centre of kidney where urine is collected after its formation is called

ARenal pelvis
BGlomerulus
CDistal convoluted tubule
DUrethra

 

Question 5

The lungs are important organs for excretion of

AAmmonia
BWater
CCarbon dioxide
DUrea
Question 6

The main nitrogen-containing waste excreted in urine is

AAmmonia
BCreatine phosphate
CNucleotides
DUrea

 

Question 7

The muscular tubes which take the urine from the kidneys to the bladder are

AUrinary bladders
BUreters
CUrethras
DNephrons
Question 8

The principal nitrogenous excretory compound in humans is synthesised

AIn the liver but eliminated mostly through kidneys
BIn kidneys but eliminated mostly through liver
CIn kidneys as well as eliminated by kidneys
DIn liver and also eliminated by the same through bile

 

Question 9

The process of dilution of urine takes place in

ADistal tubule
BCollecting tubule
CLoop of Henle
DProximal tubule
Question 10

The renal medulla consists of cone-shaped tissue masses called _______.

ARenal pyramid
BAdipose capsule
CRenal cortex
DRenal pelvis

 

Question 11

The size of filtration slits of Glomerulus are approximately

A10 nm
B15 nm
C20 nm
D25 nm
Question 12

The term haematuria is used to describe

ABlood cancer
BPresence of Red Blood cells in Urine
CInternal bleeding
DBlood poisoning

 

Question 13

The yellow pigment derived from heme breakdown and excreted by kidneys is

AUric acid
BUrochrome
CCholesterol
DMelanin
Question 14

Urea is produced as an excretory substance in human body in

AUrinary bladder
BLiver
CKidney
DRectum

 

Question 15

Which one of the following statements in regard to the excretion by the human kidneys is correct?

AAscending limb of Loop of Henle is impermeable to electrolytes
BDescending limb of Loop of Henle is impermeable to water
CDistal convoluted tubule is incapable of reabsorbing HCO3
DNearly 99 percent of the glomerular filtrate is reabsorbed by the renal tubules

Excretory Products and their Elimination: MCQs Quiz – 03

Question 1

What is reabsorbed through loop of Henle?

AGlucose
BCO2
CPotassium
DWater
Question 2

Why do we urinate more in wet and cold months?

AKidney becomes more active
BIncrease of ADH secretion
CSweating is much reduced
DImpairment of water absorption in nephron

 

Question 3

When the infection invades the urinary bladder, it is called

ACystitis
BUrethritis
CPyelonephritis
DHemodialysis
Question 4

When the infection is localized in the urethra, it is called

AUrethritis
BCystitis
CPyelonephritis
DHemodialysis

 

Question 5

Which of the following hormones is involved in regulating the water-salt balance of the blood?

ACortisone
BAldosterone
CADH
DANH
Question 6

Which of the following hormones promotes the excretion of potassium ions and the reabsorption of sodium ions?

AAldosterone
BRennin
CADH
DNone of these

 

Question 7

Which of the following leads to the secretion of aldosterone from the adrenal cortex?

AChymotrypsin
BTrypsin
CRenin
DNone of these
Question 8

Which of the following structures facilitates easy passage of small molecules to the glomerular capsule?

ALoop of the nephron
BPeritubular capillary
CConvoluted tubule
DGlomerulus

 

Question 9

Which of the two waste products are removed from the blood in liver by Ornithine cycle?

AUrea and CO2
BUric acid and ammonia
CAmmonia and CO2
DUrea and ammonia
Question 10

Which one of following correctly explains the function of a specific part of a human nephron?

AAfferent arteriole : Carries the blood away from the glomerulus towards renal vein
BPodocytes : Create minute spaces (slit pores) for the filtration of blood into the Bowman’s capsule
CHenle’s loop : Most reabsorption of the major substances from the glomerular filtrate
DDistal convoluted tubule: Reabsorption of K+ ions into the surrounding blood capillaries

 

Question 11

Which one of the following is not a part of a renal pyramid?

ALoops of Henle
BPeritubular capillaries
CConvoluted tubules
DCollecting ducts
Question 12

Which one of the following secreted by posterior pituitary regulates water retention by the kidneys?

AAntidiuretic hormone
BAldosterone
CThyroxine
DErythropoietin

 

Question 13

Volume of urine is regulated by

AAldosterone
BAldosterone and testosterone
CADH
DAldosterone and ADH
Question 14

One of the followings is a nonsteroid hormones secreted by the atria of the heart and helps regulate blood pressure.

AErythropoietin
BAntidiuretic hormone
CThyroxine
DAtrial natriuretic hormone

 

Question 15

What will happen if the stretch receptors of the urinary bladder wall are totally removed?

AThere will be no micturition
BUrine will not collect in the bladder
CMicturition will continue
DUrine will continue to collect normally in the bladder

Locomotion and Movement | Movement and Support in Humans: MCQs Quiz – 1

Question 1

Which one of the following membranes secretes a watery fluid that lubricates and cushions the joint?

ATendons
BSynovial membrane
CLigaments
DCartilage
Question 2

Which one of the following items gives its correct total number?

ACervical vertebrae in humans – 8
BFloating ribs in humans – 4
CAmino acids found in proteins – 16
DTypes of diabetes – 3

 

Question 3

Which one of the following is an example of an imperfect joint?

AElbow joint
BPubic symphysis
CSuture
DBall and socket joint
Question 4

Which one of the following is a sesamoid bone?

APectoral girdle
BPterygoid
CPelvis
DPatella

 

Question 5

Which one of the following bones is the only movable portion of the skull?

AMaxilla
BMandible
CFrontal bone
DZygomatic bone
Question 6

Which of these is the contractile protein of a muscle?

ATubulin
BTropomyosin
CMyosin
DAll of these

 

Question 7

The expanded portions of the ______ are calcium storage sites.

ASarcoplasmic reticulum
BSarcoplasm
CNeuromuscular junctions
DMyofibril
Question 8

Which of the following muscles draw the lower jaw, tongue and the head backward?

AAbductor
BRetractor
CProctor
DAll of these

 

Question 9

Which one of the following pairs is wrong about cardiac muscles?

ALocation – only in the heart
BFunction – Pumping of blood
CGap junctions – No
DStriated – Yes
Question 10

Which of the following is striped muscle but not voluntary?

AWrist muscles
BShank
CCardiac muscles
DAbdominal

 

Question 11

Which one of the following is correct pairing of a body part and the kind of muscle tissue that moves it?

AIris – Involuntary smooth muscle
BHeart wall – Involuntary unstriated muscle
CBiceps of upper arm – Smooth muscle fibres
DAbdominal wall – Smooth muscle
Question 12

Which of the following is a skull bone?

APterygoid
BArytenoid
CCricoid
DNone of these

 

Question 13

Which one of the following is the correct matching of three items and their grouping category?

ItemsGroup
Cytosine, uracil, thiaminePyrimidines
Malleus, incus, cochleaEar ossicles
Ilium, ischium, pubisCoxal bones of pelvic girdle
Actin, myosin, rhodopsinMuscle proteins
A1
B2
C3
D4
Question 14

Which of the following bones make up the structure of the hand?

AMetacarpal
BTarsal
CCarpal
DPhalanges

 

Question 15

Which muscle is adapted to be highly resistant to fatigue?

ACardiac
BStriped
CUnstriped
DVoluntary

Locomotion and Movement | Movement and Support in Humans: MCQs Quiz – 2

Question 1

______ connect the ends of bones together.

ALigaments
BTendons
CMuscles
Dcartilages
Question 2

Which kind of joint (the sutures of the cranium) is essentially immovable?

ACartilaginous joint
BFibrous joint
CHinge joint
DBall and socket joint

 

Question 3

Which joint occurs between humerus and radioulna?

ABall and socket joint
BSliding
CPivot
DHinge joint
Question 4

Which of the following is a wrist bone?

APubis
BUlna
CCarpal
DFemur

 

Question 5

Which is the largest synovial joint of the human body?

AKnee joint
BShoulder joint
CElbow joint
DHip joint
Question 6

Ilium, ischium, and pubis join at the ______ to form coxal bone.

AAcetabulum
BIlium
CSternum
DGlenoid cavity

 

Question 7

Which is a part of pectoral girdle?

AAcetabulum
BIlium
CSternum
DGlenoid cavity
Question 8

What is the ion necessary for muscle contraction?

ACl
BCa
CNa
DK

 

Question 9

Where is the Ball and socket joint found?

AShoulder
BAtlas and Axis
CAtlas and Head
DKnee
Question 10

When bone becomes hard, the osteocytes are trapped in hollow chambers called

AOsteoblasts and osteoclasts
BRed bone marrow
CCartilage
DLacunae

 

Question 11

Voluntary muscular coordination is under control of

ACerebellum
BCerebral hemisphere
CCerebrum
DMedulla oblongata.
Question 12

Vertebral column extends from the skull to

APectoral girdle
BPelvis
CFrontal bone
DPhalanges

 

Question 13

Which molecule provides ATP during muscle contraction?

ACreatine phosphate
BHemoglobin
CMyoglobin
DMyosin
Question 14

Total number of bones in the hind limb is

A30
B15
C20
D24

 

Question 15

Three of the following pairs of the human skeletal parts are correctly matched with their respective inclusive skeletal category and one pair is not matched. Identify the non-matching pair.

 Pairs of skeletal partsCategory
(1)Humerus and ulnaAppendicular skeleton
(2)Malleus and stapesEar ossicles
(3)Sternum and RibsAxial skeleton
(4)Clavicle and Glenoid cavityPelvic girdle
A1 
B2 
C3 
D4 

Locomotion and Movement | Movement and Support in Humans: MCQs Quiz – 3

Question 1

How many bones are there in the axial part of a human skeleton?

A180
B120
C210
D80
Question 2

In a new born baby, the flat bones in its skull are separated by large spaces filled with fibrous connective tissue. These soft spots are called

AFontanels
BChitin
CBursae
DMenisci

 

Question 3

The total number of bones in human skull are

A30
B29
C25
D106
Question 4

The segment of a myofibril between two Z-lines is called

ASarcomere
BSarcoplasm
CSarcolemma
DSarconema

 

Question 5

There are ______ of ribs in human body.

A20 pairs
B10 pairs
C12 pairs
D8 pairs
Question 6

The number of ‘floating ribs’ in human body is

A2 pairs
B3 pairs
C5 pairs
D6 pairs

 

Question 7

The Junction between a nerve cell and the motor unit is called

ACreatine phosphate
BSynapse
CNeuromuscular junction
DSarcomeres
Question 8

What joint is found between the ribs and sternum?

ACartilaginous
BHinge
CAngular
DFibrous

 

Question 9

The joint between the atlas and axis is

ABall and socket
BSaddle
CPivot
DAngular
Question 10

The elements associated with muscle contraction are

AMg and Ca
BMg and Cl
CNa and Ca
DCa and K

 

Question 11

The clavicle articulates with _________ of scapula.

AAcromion process
BGlenoid cavity
CAcetabulum cavity
DBall and socket joint
Question 12

The bones that attach the arm to the axial skeleton (composed of the clavicle and scapula) is called

ACranium
BPelvic girdle
CPectoral girdle
DScapula

 

Question 13

The bone-forming cells that secrete the organic matrix of bone and promote the deposition of calcium salts into the matrix are

AOsteoclasts
BOsteoblasts
COsteocyte
DChondroblasts
Question 14

Tendons connect ______ at a joint.

ABone to bone
BMuscle to muscle
CMuscle to bone
DMuscle to blood vessel

 

Question 15

Synovial joints occur between

ATail vertebrae
BHumerus and ulna
CTwo skull bones
DTwo vertebrae

Locomotion and Movement | Movement and Support in Humans: MCQs Quiz – 4

Question 1

Synovial joint is

APivot joint
BBall and socket joint
CHinge joint
DAll of these
Question 2

Which of the following gives off synovial fluid as a lubricant?

ACartilage
BSynovial membrane
CBones
DAll of these

 

Question 3

Suspensory ligament is present in

AEye
BBrain
CEar
DKidney
Question 4

Surface for attachment of tongue is

APalatine
BPterygoid
CSphenoid
DHyoid apparatus

 

Question 5

Source of energy in muscle contraction is

AATP
BGTP
CADP
DCreatine phosphate
Question 6

Which of the following is the smallest muscle in human body?

ASartorius
BStapedius
CStapes
DMandibular

 

Question 7

A sarcomere extends between two dark vertical lines called ______.

AI band
BZ line
CMyofilament
DNone of these
Question 8

Ribs are connected to ______ .

AClavicle
BSternum
CScapula
DIlium

 

Question 9

Which protein is present in cartilage?

AChondrin
BCollagen
COssein
DNone of these
Question 10

Origin of striated muscle is form which germ layer of embryo:

AEctoderm
BEndoderm
CMesoderm
DAll of these

 

Question 11

Which one of the skull bones is movable?

AVomer
BMaxillary
CMandible
DAll of these
Question 12

One of the following is true of muscle contraction.

AH-zone expands
BI-band expands
CA-Band remains constant
DThe sarcomeres expands

 

Question 13

Which one of the following is referred as either fingers or toes?

ATarsals
BDigits
CMetacarpals
DCarpals
Question 14

One of the following is not a biological function of skeleton?

ASupport
BStorage
CExcretion
DMovement

 

Question 15

In a synovial joint, the two bones are fastened together and stabilized by ______.

AMenisci
BLigaments
CTendons
DSynovia

Locomotion and Movement | Movement and Support in Humans: MCQs Quiz – 5

Question 1

One of the following bones lies in front of the sphenoid and helps forming the orbits and the nasal septum.

AZygotmatic bone
BLacrimal bone
COccipital bone
DEthmoid bone
Question 2

Number of vertebrae in human skeleton is

A33
B38
C40
D45

 

Question 3

Name the joints between the ribs and sternum and the pubic symphysis that tend to be slightly movable.

ACartilaginous joints
BFibrous joints
CHinge joints
DBall and socket joints
Question 4

Myoglobin occurs in

ACardiac muscle fibres
BWhite muscle fibres
CRed muscle fibre
Dboth (A) and (B)

 

Question 5

Muscular and nervous excitability is lowered by which of the following?

ANa
BMg
CCa
DK
Question 6

Low Ca++ in the body fluid may be the cause of

AGout
BTetany
CAnaemia
DAngina pectoris

 

Question 7

Largest bone in human body is

AUlna
BFemur
CHumerus
DTibia
Question 8

Joint between femur and acetabulum is called

APivot
BSliding
CBall and socket joint
DHinge joint

 

Question 9

Joint between bones of human skull is

AHinge joint
BCartilaginous joint
CSynovial joint
DFibrous joint
Question 10

Ions that must be present for binding the cross bridges is

AK+
BNa+
CCa+
DNone of these

 

Question 11

Select the correct statement regarding the specific disorder of muscular or skeletal system:

AMyasthenia gravis – Auto immune disorders which inhibits sliding of myosin filaments
BGout – inflammation of joints due to extra deposition of calcium
CMuscular dystrophy – age related shortening of muscles
DOsteoporosis – decrease in bone mass and higher chances of fractures with advancing age
Question 12

Hinge joint occurs between

AHumerus and pectoral girdle
BFemur and pelvic girdle
CHumerus and radioulnar
DSkull and atlas

 

Question 13

Glenoid cavity is present in

AXiphisternum
BPectoral girdle
CPelvic girdle
DCartilage
Question 14

Functional unit of striated muscle is

AI band
BMyofilament
CZ line
DSarcomere

 

Question 15

Floating ribs in human body are

A2 pairs
B3 pairs
C4 pairs
D5 pairs

Locomotion and Movement | Movement and Support in Humans: MCQs Quiz – 6

Question 1

Fabella are the sesamoid bones associated with

AElbow joint
BWrist joint
CKnee joint
DNeck joint
Question 2

Elbow joint is an example of

ABall and socket joint
BPivot joint
CHinge joint
DGliding joint

 

Question 3

Cori’s cycle operates in

ACartilage
BMuscle
CLiver
DLiver and muscle
Question 4

Bones formed by ossification of a tendon is called

ADermal bone
BSesamoid bone
CMembrane bone
DCartilage

 

Question 5

Autorhythmicity is a special property of the muscles of the

AHeart
BIntestine
CLiver
DKidney
Question 6

ATPase enzyme essential for muscle contraction is found in

AActinin
BMyosin
CTroponin
DActin

 

Question 7

Astragalus and calcaneus occur in

AShoulder
BForelimb
CHip
DHindlimb
Question 8

Ankle joint is

AGliding joint
BHinge joint
CBall and socket joint
DPivot joint

 

Question 9

A sprain is due to stretched or torn ______.

ANerves
BMuscles
CLigaments
DTendons
Question 10

Acromion process is found in

APectoral girdle
BHumerus
CPelvic girdle
DNone of these

 

Question 11

Acetabulum is present in ______ joint.

AShoulder
BElbow
CHip
DKnee
Question 12

One of the following is a vertebrate bone and directly develops from mesenchyme.

ADermal bone
BEndochondral bone
CReplacing bone
DNone of these

 

Question 13

A skeletal muscle which decreases the angle between two bones and bends a joint is

AFlexor
BAbductor
CExtensor
DAdductor
Question 14

______ acts as a shock absorber to cushion when tibia and femur come together.

ATendon
BCartilage
CLigament
DDisc

 

Question 15

Zygomatic bones are found in

ASkull
BPectoral girdle
CPelvic girdle
DSternum

Locomotion and Movement | Movement and Support in Humans: MCQs Quiz – 7

Question 1

Secretion of osteoid by osteoblasts forms ______.

AMarrow
BCartilage
CMatrix
DCanaliculi
Question 2

The supportive skeletal structures in the human external ears and in the nose tip are examples of ______.

ALigament
BAreolar tissue
CBone
DCartilage

 

Question 3

The two protein molecules, closely associated with actin filaments are ______ and ______.

Aactin and myosin
Bactin and tropomyosin
Ctroponin and tropomyosin
Dtubulin and tropomyosin
Question 4

Cells and their functions are matched below. Which is the correct option?

AOsteoblasts – bone-forming cells
BOsteoclasts – bone-absorbing cells
COsteocytes – Cartilage-forming cells
DBoth (A) and (B) are correct

 

Question 5

Thoracic cage of man is formed of

ARibs, sternum and thoracic vertebrae
BRibs and thoracic vertebrae
CRibs, sternum and lumbar vertebrae
DRibs and sternum
Question 6

The type of muscles present in our

AThigh are striated and voluntary
BUpper arm are smooth muscle fibres fusiform in shape
CHeart are involuntary and unstriated smooth muscles
DIntestine are striated and involuntary

 

Question 7

Which one of the following statement is true about spongy bone?

AUnorganized appearance
BLighter than compact bone
CSurrounds the bone marrow cavity
DAll of these are correct
Question 8

Motor neurons electrically stimulate nearby muscle fibers at ______.

ACreatine phosphate
BActin filament
CNeuromuscular junction
DCross-bridges

 

Question 9

Chemical ions responsible for muscle contraction are

ANa+ and Ca2+
BNa+ and K+
CCa2+ and K+
DCa2+ and Mg2+
Question 10

Assertion: Knee joint is the hinge type of joint. Reason: Femur, patella and fibula are associated with knee joint.

AAssertion and Reason both are correct and Reason is the correct explanation of Assertion
BAssertion and Reason both are correct but Reason is not correct explanation of Assertion
CAssertion is correct but Reason is wrong
DAssertion is wrong but Reason is correct

 

Question 11

In hurdle race, what is the major energy source of the leg muscle?

APerformed ATP
BGlycolysis
CPyruvate and lactate
DOxidative metabolism
Question 12

Which one of the followings stands incorrect regarding skeletal muscle?

AResponsible for voluntary movement
BContract and expand slowly
CCell fibers have multiple nuclei
DStimulated by central nervous system

 

Question 13

Yellow bone marrow, in the medullary cavity of the diaphysis is primarily ______.

ACollagen fibers, made of protein
BBone-forming and bone-absorbing cells
CFat that can be utilized for energy
DNone of these
Question 14

Statements about the mechanism of muscle contraction are given below:

  1. Acetylcholine is released when the neural signal reaches the motor end plate.
  2. Muscle contraction is initiated by a signal sent by CNS via a sensory neuron.

III. During muscle contraction isotropic band gets elongated.

  1. Repeated activation of the muscles can lead to lactic acid accumulation.

Identify the correct statements.

AI and IV are correct
BI and III are correct
CII and III are correct
DI, Il and III are correct

 

Question 15

Match the following and choose the correct option.

Type Synovial JointBone Involved
a. Ball and socket1. Carpal and metacarpal of thumb
b. Hinge2. Atlas and axis
c. Pivot3. Frontal and parietal
d. Saddle4. Knee
 5. Humerus and pectoral girdle
Aa – 5, b – 4, c – 2, d – 1
Ba – 1, b – 3, c – 4, d – 5
Ca – 5, b – 4, c – 3, d – 1
Da – 1, b – 2, c – 5, d – 4

Human Endocrine System: MCQs Quiz – 1

Question 1

Concentration of the urine is controlled by ______

AMSH
BADH
COxytocin
DACTH
Question 2

Damage to thymus in children may lead to

ALoss of antibody mediated immunity
BReduction in stem cell production
CReduction of hemoglobin content of blood
DLoss of cell-mediated immunity

 

Question 3

ACTH stimulates the adrenal cortex to release a group of hormones called ______.

AMineralocorticoid
BGlucocorticoid
CEndorphins
DGlucagon
Question 4

Adrenocorticotropic hormone stimulates the adrenal cortex to produce ______.

AEpinephrine
BAldosterone
CCortisol
DTestosterone

 

Question 5

An enlarged thyroid is the result of ______ deficiency.

ACalcium
BIodine
CIron
DPhosphorus
Question 6

Anabolic steroids are ______ versions of testosterone.

AEffective
BSynthetic
CNatural
DIneffective

 

Question 7

The hormone known to participate in metabolism of calcium and phosphorus is

AMineralocorticoids
BCalcitonin
CGlucagon
DGlucocorticoids
Question 8

Chemical signals released by an organism that influence the behavior of other individuals of the same species are called ______.

APheromone
BInsulin
CAndrogen
DSteroid

 

Question 9

Deficiency of adrenal cortex hormones results in

ATetany
BAcromegaly
CAddison disease
DCretinism
Question 10

During growth period release of too much growth hormone can lead to

ACretinism
BAcromegaly
CGigantism
DSimmond’s disease

 

Question 11

Endemic goitre is a state of

AIncreased thyroid function
BNormal thyroid function
CDecreased thyroid function
DModerate thyroid function
Question 12

Glucagon hormone is secreted by the ______.

AThyroid gland
BAdrenal gland
CPituitary gland
DPancreas

 

Question 13

Hormone responsible for the secretion of milk after parturition

AICSH
BProlactin
CACTH
DLH
Question 14

In addition to thyroxine (T4), triiodothyronine (T3), thyroid gland produces ______

AThyroid-stimulating hormone
BAdrenocorticotropic hormone
CCalcitonin
DGonadotropic hormones

 

Question 15

Given below is an incomplete table about certain hormones, their source glands and one major effect of each on the body in humans. Identify the correct option for the three blanks A, B and C

GLANDSSECRETIONEFFECT ON BODY
AOestrogenMaintenance of secondary
sexual characters
Alpha cells of Islets of
Langerhans
BRaises blood sugar level
Anterior pituitaryCOver secretion leads to gigantism

 

 ABC
(1)PlacentaGlucagonCalcitonin
(2)OvaryGlucagonGrowth hormone
(3)PlacentaInsulinVasopressin
(4)OvaryInsulinCalcitonin
A1 
B2 
C3 
D4 

Human Endocrine System: MCQs Quiz – 2

Question 1

Which one of the followings are male sex hormones?

AInsulins
BAldosterones
CAndrogens
DPheromones
Question 2

In adults, insufficient thyroxine can lead to ______.

AGoiter
BTetany
CCretinism
DMyxedema

 

Question 3

In children, hypothyroidism (underactive thyroid gland) can lead to ______

AGoiter
BAcromegaly
CCretinism
DMyxedema
Question 4

In Male the sex hormone that maintains sexual organs and secondary sex characteristics is

AProgesterone
BEstrogen
CTestosterone
DRelaxin

 

Question 5

In the body, both the blood sodium and potassium levels are regulated by _______.

APheromones
BAldosterone
CCortisol
DAndrogens
Question 6

In which of the following pairs, the hormone of endocrine glands and its primary action is mismatched.

ACalcitonin – Lower blood calcium levels
BParathyroid – Raises blood calcium levels
CSomatostatin – Inhibits release of glucagon
DMelatonin – Regulates the rate of cellular metabolism

 

Question 7

Islets of Langerhans are found in

AAnterior Pituitary
BKidney Cortex
CSpleen
DEndocrine pancreas
Question 8

Name the condition when the concentration of Ketone body increases in urine

AAcromegaly
BDiabetes mellitus
CDiabetes insipidus
DCushing’s disease

 

Question 9

Pituitary gland known as the ‘master’ endocrine gland is under the control of

APineal gland
BAdrenal gland
CHypothalamus
DThyroid gland
Question 10

Somatostatin

AStimulates glucagon release while inhibits insulin release
BStimulates release of insulin and glucagon
CInhibits release of insulin and glucagon
DInhibits glucagon release while stimulates insulin release

 

Question 11

cells of pancreas isd and aThe chemical nature of hormones secreted by

AGlycolipid
BGlycoprotein
CSteroid
DPolypeptide
Question 12

The endocrine gland which contributes to setting the body’s biological clock is the ______.

APituitary gland
BThymus gland
CPineal gland
DThyroid gland

 

Question 13

In human adult females oxytocin

ACauses strong uterine contractions during parturition
BIs secreted by anterior pituitary
CStimulates growth of mammary glands
DStimulates pituitary to secrete vasopressin
Question 14

Match the source gland with its respective hormone as well as the function

 Source glandHormoneFunction
(1)ThyroidThyroxineRegulates blood
calcium level
(2)Anterior
pituitary
OxytocinContraction of uterus
muscles during child
birth
(3)Posterior
pituitary
VasopressinStimulates resorption
of water in the distal
tubules in the
nephron
(4)Corpus
luteum
EstrogenSupports pregnancy
A1 
B2 
C3 
D4 

 

Question 15

The specific region of Hypothalamus, responsible for physiological sweat secretion, is

APara-ventricular nucleus
BSupra-Optic nucleus
CMedian Eminence
DPars Distalis

Human Endocrine System: MCQs Quiz – 3

Question 1

The adrenal cortex produces ______.

AAdrenaline
BCalcitonin
CEpinephrine
DAldosterone
Question 2

The primary androgen produced by males is ______.

AEpinephrine
BAldosterone
CCortisol
DTestosterone

 

Question 3

Which of the following hormone is chemically glycoprotein?

AGrowth hormone
BProlactin
CErythropoietin
DEstrogen
Question 4

The hormone responsible for “Fight and Flight” response is

AAdrenalin
BThyroxine
CADH
DOxytocin

 

Question 5

Which of the following hormones synchronizes circadian rhythms and may be involved in onset of puberty?

AThymopoietin
BThymosin
CMelatonin
DParathyroid
Question 6

Which of the following is the function of Adrenaline?

AHelps in gastric juice secretion
BIncreases heart rate and blood pressure
CIncreases blood calcium
DHelps in milk secretion

 

Question 7

Which of the hormone(s) has effects on the stomach, pancreas, and gallbladder?

ASecretin
BCholecystokinin
CGastrin
DAll of the above
Question 8

Which one of the following condition is resulted from excess GH in adults?

ACushing’s disease
BAcromegaly
CHyperthyroidism
DDiabetes mellitus

 

Question 9

Which one of the following pairs is incorrectly matched?

AInsulin – Diabetes mellitus (disease)
BGlucagon – Beta cells (source)
CSomatostatin – Delta cells (source)
DCorpus luteum – Relaxin (secretion)
Question 10

Which one of the following pairs is mismatched?

AAntidiuretic hormone – Kidneys
BLuteinizing hormone – Mammary glands
CProlactin – Mammary glands
DAdrenocorticotropic hormone – Adrenal cortex

 

Question 11

Which one of the following pairs of organs includes only the endocrine glands?

AAdrenal and Ovary
BParathyroid and Adrenal
CPancreas and Parathyroid
DThymus and Testes
Question 12

Which one of the followings is the primary target organ of aldosterone?

AKidney
BPancreas
CLiver
DBoth (B) and (C)

 

Question 13

The nerve centres which control the body temperature and the urge for eating are contained in

AThalamus
BHypothalamus
CPons
DCerebellum
Question 14

Which part of human brain is concerned with the regulation of body temperature?

AHypothalamus
BMedulla oblongata
CCerebellum
DCerebrum

 

Question 15

Which one of the following is the correct matching of the events occurring during menstrual cycle?

AMenstruation : breakdown of myometrium and ovum not fertilised
BOvulation : LH and FSH attain peak level and sharp fall in the secretion of progesterone
CProliferative phase : Rapid regeneration of myometrium and maturation of Graafian follicle
DDevelopment of corpus luteum : Secretory phase and increased secretion of progesterone

Nervous system in humans: Neural Control and Coordination – MCQs Quiz – 1

Question 1

Neuroglial cells support and protect ______.

AMuscle cells
BGlands
CNeurons
DNephrons
Question 2

______ is an abundant inhibitory neurotransmitter in CNS.

AAdrenaline
BAcetylcholine
CGABA
DNoradrenaline

 

Question 3

How many laminae are present in the grey matter of spinal cord?

AFour
BSix
CEight
DTen
Question 4

Hypothalamus and thalamus are in ______.

ACerebellum
BCerebrum
CLimbic system
DDiencephalon

 

Question 5

Which one of the followings is the function of parasympathetic nervous system?

AStimulates oil and sweat glands in the skin
BPupil constriction
CAcceleration of heart beat
DContraction of hair muscles
Question 6

A short Gap in the myelin sheath around a nerve fiber is called ______.

ADendrite
BAxon terminal
CNode of Ranvier
DNone of these

 

Question 7

At a neuromuscular junction, synaptic vesicles discharge ______.

AAcetylcholine
BEpinephrine
CAdrenaline
DNone of these
Question 8

Broca’s area in the left hemisphere is related to ______.

AReceiving the impulses from eyes
BSpeech
CLearning and reasoning
DSensation of smell

 

Question 9

Cocaine as a stimulant of the CNS interferes with the reuptake of ______ at synapses.

AAcetylcholine
BDopamine
COxygen
DEpinephrine
Question 10

Functions of smooth muscles, cardiac muscles, organs, and glands are regulated by ______ system.

AParasympathetic
BSympathetic
CCentral nervous
DAutonomic

 

Question 11

In the PNS, the neuroglial cells that form protective myelin sheaths are ______.

AMicroglia
BGanglionic cells
COligodendrocytes
DSchwann cells
Question 12

Molecules of neurotransmitter, released from the presynaptic neuron bind to receptors on the ______.

APostsynaptic membrane
BCell body
CAxonal membrane
DNone of these

 

Question 13

Comprehension of spoken and written words take place in the region of

AAssociation Area
BMotor Area
CWernicke’s Area
DBroca’s Area
Question 14

One of the followings is a naturally occurring compound which reduces the sensation of pain and generates feelings of well-being?

AAcetylcholine
BDopamine
CEndorphin
DEpinephrine

 

Question 15

During the propagation of a nerve impulse, the action potential results from the movement of

ANa+ ions from extracellular fluid to intracellular fluid
BK+ ions from extracellular fluid to intracellular fluid
CNa+ ions from intracellular fluid to extracellular fluid
DK+ ions from intracellular fluid to extracellular fluid

Nervous system in humans: Neural Control and Coordination – MCQs Quiz – 2

Question 1

There are ______ pairs of cranial nerves arising from the brain.

A8
B12
C18
D25
Question 2

Recording of the electrical activity associated with the heartbeat is called ______.

AOscilloscope
BElectrocardiogram
CStethoscope
DLaparoscope

 

Question 3

Preganglionic neurons lie within the ______.

AParasympathetic nervous system
BSympathetic nervous system
CPeripheral nervous system
DCentral nervous system
Question 4

Skeletal muscles are controlled by ______.

ASympathetic nerves
BParasympathetic nerves
CSomatic nerves
DAutonomic nerves

 

Question 5

Spinal cord and brain are wrapped in protective membranes known as ______.

AAxomembranes
BMeninges
CNodes of Ranvier
DMyelin sheath
Question 6

The basic cyclic pattern of inspiration and expiration are established by a respiratory center within the ______.

ACerebellum
BMedulla oblongata
CCerebral cortex
DThalamus

 

Question 7

Which portion of the brain is responsible for various emotions such as pleasure, fear, and happiness?

AThalamus
BReticular formation
CHypothalamus
DLimbic system
Question 8

The difference in charge between inside and outside environment (change in voltage) of the nerve cell membrane is measured by ______.

AOscilloscope
BElectrocardiogram
CStethoscope
DLaparoscope

 

Question 9

The difference in voltage between the inside and outside of a cell is called ______.

ASpike potential
BAction potential
CResting potential
DReaction potential
Question 10

The generation of excitation-contraction coupling involves all the following events except

AGeneration of end-plate potential
BRelease of calcium from troponin
CFormation of cross-linkages between actin and myosin
DHydrolysis of ATP to ADP

 

Question 11

The protein carrier in the membrane, called “sodium-potassium pump” pumps ______

ABoth Na+ and K+ in
BBoth Na+ and K+ out
CNa+ in and K+ out
DNa+ out and K+ in
Question 12

The thin and convoluted outer layer of gray matter that covers the cerebral hemispheres is

AMedulla oblongata
BThalamus
CCerebral cortex
DMeninges

 

Question 13

When a neuron is in resting state i.e. not conducting any impulse, the axonal membrane is

AComparatively more permeable to K+ ions and nearly impermeable to Na+ ions
BComparatively more permeable to Na+ ions and nearly impermeable to K+ ions
CEqually permeable to both Na+ and K+ ions
DImpermeable to both Na+ and K+ ions
Question 14

When sympathetic nervous system is activated it causes the secretion of

AAdrenaline which inhibits the organ
BAcetylcholine which stimulates the organ
CAdrenaline which stimulates the organ
DAcetylcholine which inhibits the organ

 

Question 15

Select the correct statement from the ones given below

ACocaine is given to patients after surgery as it stimulates recovery
BBarbiturates when given to criminals make them tell the truth
CMorphine is often given to persons who have undergone surgery as a pain killer
DChewing tobacco lowers blood pressure and heart rate

Nervous system in humans: Neural Control and Coordination – MCQs Quiz – 3

Question 1

Which one of the followings is the largest portion of the brain in humans?

ACerebrum
BCerebellum
CMedulla
DPons
Question 2

Which neuroglia cells produce a fatty insulating material called myelin?

ASatellite cells
BSchwann cells
CBoth (A) and (B)
DNeither (A) nor (B)

 

Question 3

During synaptic transmission of nerve impulse, neurotransmitter (P) is released from synaptic vesicles by the action of ions (Q). Choose the correct P and Q.

AP = Acetylcholine, Q = Ca++
BP = Acetylcholine, Q = Na+
CP = GABA, Q=Na+
DP = Cholinesterase, Q = Ca++
Question 4

Which of the following does not act as a neurotransmitter?

AAcetylcholine
BGlutamic acid
CEpinephrine
DTyrosine

 

Question 5

Which one of the followings is responsible for the improvement of nutrient flow to the neurons and provides electrical insulation?

ANeuroglia
BMotor neuron
CSensory neuron
DInterneuron
Question 6

Which of the following is not related to the autonomic nervous system?

APeristalsis
BDigestion
CExcretion
DMemory and learning

 

Question 7

Which of the following options is appropriate for the processing center “Wernicke’s area” found in left cerebral cortex?

AHelps us to understand both written and spoken word
BAdds grammatical refinements
CSends information to Broca’s area
DBoth (A) and (C)
Question 8

Which of the following nerves is the largest of all the cranial nerves?

AAbducens nerve
BOculomotor nerve
COlfactory nerve
DTrigeminal nerve

 

Question 9

Which one of the following cranial nerves is carrying the nerve fibres originating from the Edinger-Westphal nucleus?

AOculomotor
BTrochlear
CAbducens
DVagus
Question 10

Which one of the common neurotransmitters is paired wrongly with the site where it is released?

ASomatostatin – pancreas
BSerotonin – spinal cord
CAcetylcholine – Neuromuscular junctions
DEndorphins – autonomic nervous system

 

Question 11

Which one of the following is the correct statement regarding the particular psychotropic drug specified?

ABarbiturates cause relaxation and temporary euphoria
BHashish causes after thought perceptions and hallucinations
COpium stimulates nervous system and causes hallucinations
DMorphine leads to delusions and disturbed emotions
Question 12

Which one of the following pairs is incorrectly matched in regard to the principal actions of neurotransmitters?

AEndorphins – involved in moods
BSerotonin – involved in sleep cycle
CNorepinephrine – plays a role in emotions
DSomatostatin – inhibits pancreatic release of growth hormone

 

Question 13

Which one of the followings is correct in regard to the function of cerebellum?

ARegulate heartbeat
BMuscle coordination
CSecretes melatonin
DSense reception
Question 14

Which one of the followings is not correct about neuroglial cells?

AGenerate or transmit impulses
BMaintain healthy concentrations of important chemicals in the fluid
CProvide physical support and protection to neurons
DIn PNS, responsible for myelination (Schwann cells)

 

Question 15

Which one of the following aspects is an exclusive characteristic of living things?

APerception of events happening in the environment and their memory
BIncrease in mass by accumulation of material both on surface as well as internally
CIsolated metabolic reactions occur in vitro
DIncrease in mass from inside only

Nervous system in humans: Neural Control and Coordination – MCQs Quiz – 4

Question 1

Given below is a diagrammatic cross section of a single loop of human cochlea: Which one of the following options correctly represents the names of three different parts?

AA: Perilymph, B: Tectorial membrane C: Endolymph
BB: Tectorial membrane, C: Perilymph, D: Secretory cells
CC: Endolymph, D : Sensory hair cells, A: Serum
DD: Sensory hair cells, A: Endolymph B: Tectorial membrane
Question 2

Examine the diagram of the two cell types A and B given below and select the correct option.

ACell-A is the rod cell found evenly all over retina
BCell-A is the cone cell more concentrated in the fovea centralis
CCell-B is concerned with colour vision in bright light
DCell-A is sensitive to low light intensities

 

Question 3

Which one of the following is the correct difference between Rod Cells and Cone Cells of our retina?

(1)DistributionMore concentrated in centre of retinaEvenly distributed all over retina
(2)Visual acuityHighLow
(3)Visual pigment containedIodopsinRhodopsin
(4)Overall functionVision in poor lightColour vision and detailed vision in bright light
A(1) 
B(2) 
C(3) 
D(4) 
Question 4 

An action potential in the nerve fibre is produced when positive and negative charges on outside and the inside of the axon membrane are reversed because

Aall potassium ions leave the axon
Bmore potassium ions enter the axon as compared to sodium ions leaving it
Cmore sodium ions enter the axon as compared to potassium ions leaving it
Dall sodium ions enter the axon

 

Question 5

The cutaneous plexus and the papillary plexus consist of

ASpecialized cells for cutaneous sensations
BA network of arteries to provide dermal supply
CA network of nerves to provide dermal sensation
DGland cells that release cutaneous secretions
Question 6

Which one of the following pairs of structures distinguishes a nerve cell from other types of cell?

APerikaryon and dendrites
BVacuoles and fibres
CFlagellum and medullary sheath
DNucleus and mitochondria

 

Question 7

Which one of the following is an example of negative feedback loop in humans?

AConstriction of skin blood vessels and contraction of skeletal muscles when it is too cold
BSecretion of tears after falling of sand particles into the eyes
CSalivation of mouth at the sight of delicious food
DSecretion of sweat glands and constriction of skin blood vessels when it is too hot
Question 8

During the transmission of nerve impulse through a nerve fibre, the potential on the inner side of the plasma membrane has which type of electric charge?

AFirst positive, then negative and continue to be negative
BFirst negative, then positive and again back to negative
CFirst positive, then negative and again back to positive
DFirst negative, then positive and continue to be positive.

 

Question 9

Given below is a table comparing the effects of sympathetic and parasympathetic nervous system for four features (a-d). Which one feature is correctly described?

FeatureSympathetic Nervous SystemParasympathetic Nervous System
(a) Salivary glandStimulates secretionInhibits secretion
(b) Pupil of the eyeDilatesConstricts
(c) Heart rateDecreasesIncreases
(d) Intestinal peristalsisStimulatesInhibits
A(a) 
B(b) 
C(c) 
D(d) 
Question 10 

Patients suffering from cholera are given a saline drip because

ANaCl is an important component of energy supply
BNaCl furnishes most of the fuel required for cellular activity
CNa+ ions help in stopping nerve impulses and hence, sensation of pain
DNa+ ions help in the retention of water in the body tissues

 

Question 11

Unidirectional transmission of a nerve impulse through nerve fibre is due to the fact that:

Anerve fibre is insulated by a medullary sheath
Bsodium pump starts operating only at the cyton and then continues into the nerve fibre
Cneurotransmitters are released by dendrites and not by axon endings
Dneurotransmitters are released by the axon endings and not by dendrites
Question 12

Assertion: The imbalance in concentration of Na+, K+ and proteins generates resting potential. Reason: To maintain the unequal distribution of Na+ and K+, the neurons use electrical energy.

ABoth Assertion and Reason are true and Reason is the correct explanation of the Assertion.
BBoth Assertion and Reason are true but the Reason is not the correct explanations of Assertion.
CAssertion is true, but Reason is false.
DBoth Assertion and Reason are false.

 

Question 13

If vagus nerve in man is damaged, which of the following will not be affected?

Apancreatic secretion
Bgastrointestinal movements
Ctongue movements
Dcardiac movements
Question 14

The function of vagus nerve innervating the heart is to

AInitiate the heart beat
BReduce the heart beat
CAccelerate the heart beat
DMaintain constant heart beat

 

Question 15

Cornea transplant in humans is almost never rejected. This is because:

AIt is a non-living layer
BIts cells are least penetrable by bacteria
CIt has no blood supply
DIt is composed of enucleated cells

 

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