NEET Biology Practice Test Paper 6 by TEACHING CARE online coaching classes

NEET Biology Practice Test Paper 6 by TEACHING CARE online coaching classes

                                  Paper I                   No. of Questions 100

Note: Each question contains four marks. One mark will be deduced for a wrong answer.

1. Which of the following is not caused by unsterilized needles ?

(a) AIDS (b) Serum hepatitis (c) Malaria (d) Abscess formation

2. The drug not obtained from hemp is

(a) Marijuana (b) Mescaline (c) Ganja (d) Charas

3. Opium derivative is

(a) Codeine (b) Caffeine (c) Hashish (d) Psilocybin

4. Activities of the central nervous system are depressed by

(a) Narcotics (b) Alcohol (c) None of these (d) Both of these

5. Which of the following is not a derivative of opium ?

(a) Cocaine (b) Heroine (c) Morphine (d) Codeine

6. Which of the following are obtained from Cannabis indica ?

(a) Bhang (b) Ganja (c) Charas (d) All of these

7. Foetal abnormalities are caused by

(a) Nicotine (b) Alcohol (c) L.S.D. (d) Opium

8. The communicable disease that has been fully controlled by a national programme is

(a) Malaria (b) Filaria (c) Smallpox (d) Tuberculosis

9. The cactus Lophophora yields a drug named

(a) Lysergic acid diethylamide

(b) Marijuana

(c) Psilocybin

(d) Mescaline

10. Which of the following is not an acute effect of opiate abuse ?

(a) Slowed breathing (b) Slurred speech (c) Dilatation of pupil (d) Drowsiness

11. All the following are the adverse effects of the abuse of anabolic steroids except

(a) Acne (b) Liver failure

(c) Atrophy of testes (d) Normal bone growth

12. Heroin is derived from

(a) Papaver somniferum (b) Cannabis indica

(c) Thea chinensis (d) Erythroxylon coca

13. The stimulant present in tea is

(a) Tannin (b) Cocaine

(c) Caffeine (d) Crack

14. Opium is obtained from

(a) Leaves (b) Fruits

(c) Flowers (d) Roots

15. Which of the following is not caused by smoking?

(a) Lung cancer (b) Emphysema (c) Pulmonary tuberculosis (id) Malaria

16. Neuritis is inflammation of

(a) Entire neuron (b) Only axon (c) Only cyton (d) Only dendrons

17. Cirrhosis is caused by taking (a) Bhang (b) Opium (c) Alcohol (d) Cocaine
18. Activities of the central nervous system are depressed by

(a) Narcotics (b) Alcohol

(c) None of these (d) Both of these

19. Foetal abnormalities are caused by

(a) Nicotine (b) Alcohol

(c) Both a and b (d) None of these

20. Quantity of nicotine in one cigar when injected intravenously may prove to be

(a) Highly toxic (b) Fatal

(c) Very stimulant (d) Harmless ‘

21. The critical gene called P 53 is mutated by

(a) Alcohol (b) Tobacco smoking (c) Both a and b (d) Neither a nor b

22. If you suspect major deficiency of antibodies in a person, to which of the following would you look for confirmatory evidence ?

(a) serum globulins

(b) fibrinogen in the plasma

(c) haemocytes

(d) serum albumins

23. Nicotine acts as a stimulant because it mimics the effect of

(a) Thyroxine (b) Acetylcholine

(c) Testosterone (d) Dopamine

24. Ability of an organism to ward off infection is called

(a) Resistance (b) Pathogenicity

(c) Infection , (d) Virulence

25. Which of the following cells are involved in defence mechanism of the body ?

(a) Lymphocytes (b) Macrophages (c) Neutrophils (d) All of these

26. B-cells are stimulated to produce antibodies by (a) Killer cells (b) Suppressor cells

(c) Helper cells (d) None of these

27. Interferons curb infection of

(a) Bacteria (b) Protozoans

(c) Spirochaetes (d) Viruses

28. Histamine does not cause

(a) Increased capillary permeability

(b) Smooth muscle contraction

(c) Stimulation of mucous glands

(d) Widening of veins

29. The cells which secrete perforin are

(a) Killer T-cells (b) Plasma cells (c) Suppressor T-cells (d) Helper T-cells

30. Endogenous pyrogen (Interleukin-1) is secreted by

(a) Neutrophils (b) Eosinophils (c) Macrophages (d) Monocytes

31. Movement of leucocytes out of the capillaries is called

(a) Phagocytosis (b) Diapedesis (c) Homeostasis (d) Haemopoiesis

32. Neutrophils escape from the capillaries

(a) By pushing between endothelial cells

(b) By breaking the capillary wall cells

(c) Through pores in the endothelium

(d) By dissolving capillary wall

33. Our body has….. lines of defence

(a) Two (b) Three (c) Many (d) Nil

34. The cells that actually release the antibodies are

(a) Helper T-cells (b) Cytotoxic T- cells

(c) Plasma cells (d) Macrophages

35. Study of interaction of antigen and antibody in blood is

(a) Haematology (b) Serology (c) Angiology (d) Cryobiology

36 In the life cycle of Plasmodium exflagellation occurs in

(a) sporozoites

(b) microgametes

(c) megagametes

(d) signet ring

37, Cells involved in immune mechanism are

(a) Erythrocytes (b) Lymphocytes

(c) Eosinophils (d) Thrombocytes

38. An antibody is

(a) Molecule that specifically inactivates an antigen

(b) WBC which invades bacteria

(c) Secretion of mammalian RBC

(d) Component of blood

39. A cell-coded protein that is formed in response to infection with most animal viruses, is called

(a) Interferon (b) Antigen

(c) Histone (d) Antibody

40. Antigens are found

(a) In cytoplasm (b) In nucleus

(c) On nuclear envelope

(d) On cell surface

41. Antibody production is assisted by

(a) Monocytes (b) Leucocytes (c) Lymphocytes (d) Erythrocytes

42. The chemical substance derived from living organisms that has an inhibitory effect on parasitic organism is known as

(a) Antibody (b) Antibiotic

(c) Exotoxin (d) Bacteriocide

43. Antiviral substance produced by many vertebrates in response to viral infection for resisting the multiplication of virus is known as

(a) Virion (b) Interferon

(c) Antivirin (d) Antigen

44. Brown sugar is.

(a) Hashish (b) LSD

(c) Fleroin (d) Barbiturate

45. Ganja and LSD are classified as

(a) Narcotics (b) Hallucinogens

(c) Stimulants (d) Depressants

46. Which one of the following is an opiate narcotic ?

(a) Barbiturates (b) Morphine (c) Amphetamines (d) LSD

47. The use of Cannabis products (bhang, ganja, charas, marijuana or hashish) causes

(a) Depression of brain activity and feeling of calmness

(b) Alters thoughts, perceptions and feeling

(c) Supresses brain function and relieves pain

(d) Stimulates the nervous system and increases alertness and activity

48. A person has developed interferon in his body. He seems to carry an infection of (a) Tetanus (b) Malaria

(c) Measles (d) Typhoid

49. Type of immunoglobulin present in colostrum is

(a) IgA (b) IgG

(c) IgD (d) IgE

50. Antiserum contains

(a) Antigen (b) Leucocytes

(c) Antibodies (d) None of these

51. Passive immunity is defined as immunity

(a) Inherited from parents

(b) Achieved through vaccination

(c) Achieved through first exposure to the disease

(d) Achieved through the sera of other animals enriched in antibodies

52. Excessive consumption of ethanol causes damage to the

(a) Liver (b) Kidneys

(c) Lungs (d) Heart

53 Cocaine is obtained from

(a) Thea sinensis (b) Papaver somniferum  (c) Erythroxylem coca (d) Coffea arabica

54. Heroin is a form of

(a) Tobacco (b) Poppy

(c) Datura (d) Cannabis

55. Heroin is got from a plant of family

(a.) Leguminosae (b) Papaveraceae (c)Liliaceae (d) Solanaceae

56. Opium is got from

(a.) Thea sinensis (b) Coffea arabica

(c) Oryza saliva (d) Papaver somniferum

57. On stimulation by a foreign antigen in the body, the T- lymphocytes produce by division a clone of T-cells called

(a) Lymphocytes (b) Lymphoblasts (c) Plasma cells (d) None of these

58- The major phagocytic cells are

(a) Lymphocytes (b) Mast cells (c) Macrophages (d) Plasma cell

59. Aniviral substances are

(a) Antibiotics (b) Antibodies

(c) Interferons (d) Vaccines

60. Fermentation processes are carried by

(a) Clostridium (b) Aspergillus

(c) Lactobacillus (d) Saccharomyces

61. Which drug is called superman ?

(a) Amphetamine (b) Heroin (c) Cocaine (d) LSD

62. LSD is prepared from

(a) Lichen (b) Algae

(c) Fungus (d) Bacteria

63. A disease sometimes found in persons above 40 which is characterized by poor CNS Coordination, forgetfulness and tremors of hands is

(a) Epilepsy (b) Alzheimer’s disease

(c) Migraine (d) Schizophremia

64. Which one is correctly matched ?

(a) Cocaine-opiate narcotic

(b) Bhang-analgesic

(c) Reserpine-Tranquilliser

(d) Morphine-Hallucinogen

65. Stimulant cocaine is obtained from

(a) Rauwolfia (b) Erythroxylon .

(c) Papaver (d) Eucalyptus

66. Slow respiration, slow pulse and constriction of pupil occurs due to drug addiction of

(a) Morphine and opium

(b) Cocaine and heroin

67. L.S.D, morphine and bhang are respectively obtained from

(a) Claviceps, Papaver and Cannabis

(b) Claviceps, Cannabis and Rauwolfia

(c) Cannabis, Claviceps and Fuscarium

(d) Claviceps, Rauwolfia and Papaver

68. Hashish and Ganja are got from

(a) Erythroxylon (b) Nicotiana (c) Papaver (d) Cannabis

69. The stimulant present in tea, cocoa and cola drinks is

(a) Cocaine (b) Tannin

(c) Astringent (d) Caffeine

70. LSD is

(a) Lysing diethylamide

(b) Lysergic acid diethylamide

1. c) Lysing dimethylamide

(d) Lysergic acid dimethylamide

71. Marijuana is extracted from

(а) Dried leaves and flowers of hemp plant

(б) Ergot fungus

(c) Roots of hemp plant

(d) Cocoa plant

72. Opiates (opium, heroin) are obtained from

(a) Papaver sominiferum

(b) Cannabis sativa

(c) Theobroma

(d) Thea chinensis

73. THC is associated with

(a) Papaver (6) Cannabis

(c) Erythroxylon (d) Theobroma

74. Formation of alcohol by yeast is

(a Anaerobic process (b) Extracellular process (c) Microbial process (d) All the above

75-Which of the following is involved in defence mechanism of the body ?

(a) Lymphocytes (b) Neutrophils

(c) Macrophages (d) All of these

76. T-lymphocytes first mature in

(a) Thymus (b) Pancreas

(c) Liver (d) Spleen

77.HIV mainly infects

(a) Cytotoxic T-lymphocytes

(b) Helper lymphocytes

(c) Cell-mediated-T lymphocytes

(d) Killer lymphocytes

78 A person is injected with gamma-globulin against hepatitis. This is

(a) Artificially acquired active immunity

(b) Artificially acquired passive immunity

(c) Naturally acquired active immunity

(d) Naturally acquired passive immunity

79 Short-lived immunity acquired from mother to foetus across placenta or through mother’s milk to the infant is categorised as

(a) active immunity

(b) passive immunity

(c) cellular immunity

(d) innate non-specific immunity

80 Which part of the brain is involved in loss of control when a person drinks alcohol ?

(a) Cerebellum (b) Medulla oblongata (c) Cerebrum (d) Ponsvaroli

(e) Thalamus

81Marijuana and charas are

(a) Stimulant (b) Hellucinogens

(c) Depressant (d) Sedative

82. Caffeine is a stimulant present in

(a) Coffee (b) Tea

(c) Cold drinks (d) All of these

83 Which one of the following is a matching pair of a drug and its category ?

(a) Amphetamines—Stimulant

(b) Lysergic acid Dimethylamide—Narcotic

(c) Heroin—psychrotropic

(d) Benzodiazepam—pain killer

84.’AIDS’ is due to

(a) destruction of killer T-cells

(b) destruction of helper T-cells

(c) lack of interferons

(d) autoimmunity

85. Which of the following malarial parasites has the longest inculation period ?

(a) Plasmodium vivax

(b) Plasmodium falciparum

(c) Plasmodium ovale

(d) Plasmodium malarial

86. A young drug addict used to show symptoms of depressed brain activity, feeling of calmness, relaxation and drowsiness. Possibly he was taking

(a) amphetamine (b) marijuana (c) pethidine (d) valium

87 Antigen binding site in an antibody is found between

(a) two light chains (ib) two heavy chains

(c) one heavy and one light chain

(d) either between two light chains or between one heavy and one light chain depending upon the nature of antigen

88. Interferons are

(a) anti-bacterial protein

(b) anti-viral protein

(c) complex protein

(d) anti-clotting protein

89. HIV that causes AIDS, first starts destroying

(a) helper T-lymphocytes

(b) B-lymphocytes

(c) leucocytes

(d) thrombocytes

90. In malaria, the product released by mosquito into blood that causes chill and fever is called

(a) haematin (b) Schuffner’s dots

(c) haemozoin (d) haemotoxin

The following questions consist of two statements each: assertion(A) and reason (R).  To answer these questions, mark the correct alternative as

1. If both A and R are true and R is the correct explanation of A
2. If both A and R are true but R is not the correct explanation of A.
3. If A is true but R is false.
4. If both A and R are false,
5. Assertion : The earth originally had a reducing atmosphere.

Reason : There was no life on the earth when it came into existence.
A    B    C    D

92. Assertion : New life comes only from the preexisting life.

Reason: Spontaneous generation of life under the present environmental conditions on earth is not possible

A    B    C    D

93.    Assertion : Life originated by chance coming together of necessary chemicals through a series of chemical reactions (abiogenesis).
Reason: Abiogenesis has not been experimentally proved.
A    B    C    D

94. Assertion : The first living organisms were heterotrophs.

    Reason : They were surrounded by preformed organic molecules which they used as food.

A    B C D

95.    Assertion: Life originated on land.

Reason : Conditions were not favourable for life in water.

A    B    C    D

96.    Assertion. Coacervates are believed to be the precursors of life.

Reason. Coacervates were self-duplicating aggregates of proteins surrounded by lipid molccules.

A  B C D

97.    Assertion. Cyanobacteria evolved about 3-3-3-5 billion years ago.

Reason. Birbal Sahni Institute of PalaeobOtary has discovered the fossils of blue green algae of about 2-9 billion years.

A  B C D

98.    Assertion. Cell like aggregates of complex organic compounds are called coacervates.

Reason. Coacervates had power to grow and divide.

A    B    C    D

99.    Assertion. Primary atmosphere of primitive earth was reducing.

Reason. Primary atmosphere had abundance of NH3, CH4, CO₂ but had no free O₂.

A    B    C    D

100.    Assertion. Life first originated in water.

Reason. Primitive water bodies were alkaline.

A    B    C    D

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Answers

1. c 2. b 3 .a 4. d 5. a 6. d 7. c 8. c 9. d 10. c 11. d 12. a 13. c 14. b 15. d 16. b 17. c 18. d 19. b 20. b 21. b 22. A 23. b 24. a 25. d 26. c’ 27. d 28. b 29. a 30. a 31. b 32. a 33. b 34. c 35. b 36. b

Answers

37. b 38. a 39. a 40. d 41. c 42. b  43.  b 44. c 45. b 46. b 47. b 48. c 49. a 50. c 51. d 52. a 53. ,c.. 54. b 55. b 56. d .57. b 58. c 59. c 60. a. , 61. a 62. c 63. b 64. b 65. b 66. a

Answers

67. a 68. d 69. d 70. b • 71. a 72. a 73. b 74. d

Answers

75. b 76. a 77. b 78. b 79. b 80. c ‘ 81. b 82. d 83. a 84. b 85. d 86. d 87. c 88. ba 89. a 90. c 91. B ; 92. A; 93. C; 94. A; 95. D ; 96. C; 97. A; 98. B ; 99. A; 100. B