I. In the binomial system of taxonomy, developed during the 18th century by C. Linnaeus, the first word of an organism's name (e.g., Homo sapiens) is its

(A) Species

(B) Genus 

(C) Race

(D) Family

2. The common name of Allium cepa is

(A) Piyaz

(B) Bathu

(C) Amaltas

(D) Chana

3. Choose the correct order.

(A) Phylum — Class — Order — Family — Genus — Species

(B) Class — Phylum — Order — Family — Genus — Species

(C) Phylum — Order — Class — Family — Genus — Species

(D) Phylum — Class — Order — Family — Species — Genus

4. Highest group in classification is

(A) Class

(B) Species

(C) Order

(D) Phylum

5. The system of classification proposed by Robert Whittekar is based on different levels of cellular organization associated with three principal mode of nutrition.

(A) two

(B) three

(C) four

(D) five

6. In general appearance cubical phages are regular solid or icosahedral having

(A) 10 faces

(B) 15 faces

(C) 20 faces

(D) 21 faces

7. In the five-kingdom system of classification developed by Robert Whittaker, member of the kingdom Plantae are autotrophic, eukaryotic, and

(A) Multicellular

(B) Motile

(C) Either unicellular or multicellular

(D) Have sexual reproduction

8. Five kingdom system of classification proposed by Margulis and Schawartz is not based on.

(A) Genetic

(B) Cellular organization 

(C) Nucleic acid

(D) Mode of nutrition

9. Viruses are chemically

(A) Nucleic acid

(B) Carbohydrates

(C) Nucleoprotein

(D)  Proteins

10. Plant viruses contain RNA

(A) Always

(B) Mostly

(C) Rarely

(D) Never

11. Animal viruses contain DNA

(A) Always

(B) Mostly

(C) Rarely

(D) Never

12. Viruses are believed to be living because

(A) They can grow & multiply within the host

(B) They have nucleic acid

(C) They can undergo mutation

(D) All of the above

13. Viruses are believed to be non-living because

(A) They are not cellular

(B) They cannot multiply outside the host

(C) They can be crystalized

(D) All of the above

14. The hereditary material in viruses may be

(A) DNA

(B) RNA

(C) DNA or RNA

(D) Both DNA and RNA

15. The fact that a virus can be transmitted from an infected organism to a healthy organism of the same kind was demonstrated by lwanowsky in

(A) 1892

(B) 1931

(C) 1782

(D) 1872

16. The virus particle consists of proteins and

(A) DNA

(B) RNA

(C) Nucleic acid

(D) Acetic acid

17. Viruses resemble other living things because they

(A) Circulate

(B) Move

(C) Reproduce

(D) Arc crystalline

18. Who isolated viruses from the host tobacco cell in 1935?

(A) W.M. Stanley

(B) lwanowsky

(C) Lederberg

(D) Morgan

19. Transmission of virus was first discovered by

(A) Griffith

(B) E. Tatum

(C) lwanowsky

(D) W.M. Stanely

20. The nucleic acid of becteriophages is mostly

(A) tRNA

 (C) RNA

(B) DNA

 (D) rRN A

21. Which one of the following is the genetic substance in viruses?

(A) Proteins

(B) Nucleic acid

(C) Proteins and nucleic acid

(D) Neither proteins nor nucleic acid

22. A filter paper with a pore size ranging from 15nm —450nm allows which one of the following to pass through

(A) Virus

(B) Bacteria

(C) Protozoa

(D) Yeasts

23. Which one of the following has no cellular organization in spite of being living?

(A) Bacteria

(B) Viruses

(C) Cyanobacteria

(D) Algae

24. What is the range of size in virus?

(A) 1 Onm to 350nm

(B) 15nm to 450nm

(C) 20nm to 450nm

(D) 30nm to 450nm

25. The biological classification of corn Poaceae is its

(A) Order

(B) Family

(C) Class

(D) Genus

26. A viron is a

(A) Virus

(B) Viral protein

(C) Viral lysozyme

(D) Viral gene

27. An isolated virus is not considered living, since it

(A) separates into two inert parts

(B) cannot metabolize

(C) rapidly looses its genome chemically inert

(D) is coated with an air tight shield

28. Which one of the following reproduces only in the host cell?

(A) Bacteria

(B) Virus

(C) Nostoc

(D) Fungus

29. Process in which the genetic material shifted from one bacterium to another through a bacterio phage is called

(A) A sexual reproduction

(B) Conjugation

(C) Transformation

(D) Transduction

30. A bacteriophage is composed of

(A) DNA and RNA

(B) DNA and Ribose

(C) DNA and proteins

(D) Proteins and RNA

31. In the lytic cycle of a bacteriophage, the host DNA is

(A) replicated

(B) turned off by a protein coat

(C) digested into its nucleotides

(D) turned on by removal of a protein coat

32. In the lysogenic cycle, the DNA of a bacteriophage

(A) joins the bacterial chromosome.

(B) attaches to the inner surface of the host membrane.

(C) is immediately degraded when it enters the host.

(D) goes directly to the host's ribosome for translation.

33. Temperature phage may exist as

(A) Prophage

(B) Capsid

(C) Virioid

(D) Retrovirus

34. The disease caused by retroviruses is

(A) Malaria 

(B) Typhoid

(C) Cholera

(D) AIDS

35. The DNA of the bacterium is found present in a distinct nuclear region called

(A) Nucleolus

(B) Centrosome

(C) Nucleoid

(D) Nucleus

36. Which one of he following is not a viral disease?

(A) Influenza

(B) Tuberculosis

(C) Measles

(D) Common cold

37. Which of the following causes small pox?

(A) Virus

(B) Fungus

(C) Protozoa

(D) Bacteria

38. Which one of the following is false about AIDS?

(A) HIV

(B) Acquired Immune Deficiency Syndrome

(C) T-lymphocytes

(D) HAV

39. Pigs are reservoirs of

(A) Hepatitis A

(B) Hepatitis B

(C) Hepatitis C

(D) Hepatitis E

40. Poisons produced by bacteria are known as

(A) toxoids

(B) toxins

(C) antitoxins

(D) antibodies

41. A disease in which the red blood cells are attacked is

(A) rabies

(B) amebic dysentery

(C) polio

(D) malaria

42. Germs that enter the body in milk may cause

(A) pneumonia

(B) tetanus

(C) mumps

(D) tuberculosis

43. A disease caused by the bite of an insect is

(A) typhus

(B) typhoid

(C) rabies

(D) measles

44. All of the following protect the body against the entrance of germs except

(A) tears

(B) mucous membranes

(C) ciliated cells

(D) red blood cells

45. All of the following are examples of antibodies except

(A) agglutinins

(B) opsonins

(C) lysins 

(D) antibiotics

46. An example of passive acquired immunity is

(A) vaccination against smallpox

(B) inculating dead germs against typhoid

(C) use of Salk vaccine

(D) inoculation of antitoxin in case of a puncture wound

47. A drug obtained from the bark of a tree is

(B) tincture of iodine

(D) sulfanilamide

(A) salvarsan

(C) quinine

48. All of the following are antibiotics except

(A) penicillin

(C) aureomycin

(B) streptomycin

(D) riboflavin

49. Penicillin was discovered by

(A) Ehrlich

(C) Waksman

(B) Fleming

(D) Koch

50. All of the following are types of germs except

(A) bacteria

(B) viruses

(C) protozoa

(D) toxins

51. All of the following are useful methods of providing protection against tuberculosis except

(A) Pneumothorax

(B) use of Schick text

(C) BCG

(D) rest

52. A chest X ray is useful in detecting a case of

(A) diphteria 

(B) typhoid

(C) tetanus

(D) typhus

53. Oysters grown in polluted water may contain the germs of

(A) typhoid

(B) typhus

(C) small pox

(D) scurvy

54. A test for syphilis is the

(A) Wassermann test

(B) Widal test

(C) Dick test

(D) Schick test

55. Antitoxins against diphtheria are obtained from

(A) the weakened virus

(B) horses

(C) a toxoid

(D) penicillium notatum

56. A disease caused by bacteria is

(A) small pox

(C) polio

(B) rabies

(D) tetanus

57. A person being vaccinated against smallpox receives

(A) live cowpox virus

(B) dead cowpox virus

(C) live smallpox virus

(D) dead smallpox virus

58. A disease in which the nerves are damaged is

(A) silicosis

(B) tetanus

(C) rheumatic fever

(D) polio

59. Viruses can be seen with the aid of the

(A) oil immersion microscope

(B) synchrotron

(C) electron microscope

(D) spectroscope

60. A disease in which the brain is affected is

(A) bubonic plague

(B) pellagra

(C) gonorrhea

(D) rabies

BIOLOGY BOOK-1 61

61. The Anopheles mosquito spreads

(A) typhoid (C) typhus

(B) malaria (D) amnesia

62. All of the following are effective was to control mosquitoes except

(A) spray insecticides

(B) spray antitoxin

(C) drain swamps

(D) remove rain barrels

63. AIDS may be spread by all of the following except

(A) a shared needle used in taking drugs

(B) a contaminated blood transfusion

(C) semen

(D) casual contact

64. The black plague is transmitted by a

(A) cockroach

(B) mosquito

(C) fly if

(D) flea

65. Hepatitis C can be treated effectively with

(A) liver injections

(C) chloromycetin

(B) alpha-interferon

(D) quinine

66. Two diseases caused by protozoa are

(A) malaria and yellow fever

(B) malaria and African sleeping sickness

(C) yellow fever and African sleeping sickness

(D) malaria and pneumonia

67. All of the following diseases are caused by worms except

(A) tichinosis

(B) hookworm

(C) tapeworm

(D) ringworm

68. Eating undercooked pork may lead to

(A) hookworm

(B) trichinosis

(C) pellagra

(D) scurvy

69. The leading cause of death at the present time is

(A) tuberculosis

(B) cancer

(C) heart diseases

(D) myxedema

70. All of the following are advisable as precautions against heart diseases except

 (A) exercise mildly every day

(B) reduce smoking

(C) increase ingestion of fats

 (D) relax

71. Rheumatic fever may result

(A) from an attack of chicken pox

(B) from an attack of measles

(C) from a dislocated joint

(D) in weakening of the valves of the heart

72. Effective methods of cancer treatment include the use of all of the following except

(A) cosmic rays

(B) X-rays

(C) surgery

(D)radium

73. A contagious disease is

(A) anemia

(B) cretinism

(C) acromegaly

(D) tuberculosis

74. Lyme disease is caused by the bite of a

(A) male deer

(B) female deer

(C) deer tick

(D) deer mouse

75. Linnaeus originated the system of classification which  employs

(A) bilateral symmetry

(B) binomial nomenclature

(C) continuity of germplasm

(D) conservation of energy

76. The division of biology that deals with classification is

(A) cytology

(B) histology

(C). botany

(D) taxonomy

77. Of the following, the most closely related group of organisms is kinown as a(n)

(A) genus

(B) species

(C) order 

(D) family

78. The number of protest phyla is

(A) 1

(B) 2

(C) 3

(D) 7

79. Classification is based on all of the following except

(A) structure

(B) development

(C) evolutionary history

(D) size

80. The Latin words of the name given to a human being, Homo sapiens, include the

(A) genus and species

(B) genus and family

(C) family and order

(D) order and class

81. Of the following, the animal not included in the same genus as the house cat is the

(A) lion

(B) tiger

(C) dog

(D) leopard

82. Two invertebrate phyla are

(A) protozoa and thallophyta

(B) protozoa and mammal ia

(C) mollusks and arthropoda

(D) protoza and pteridophta

83. Monera include

(A) brown algae and bacteria

(B) blue-green algae and bacteria

(C) brown algae and protozoa

(D) blue-green algae and protozoa

ANSWERS

1. B  2. A 3. A 4. D 5. B 6. C 7. A 8. C 9. C 10. B 11. B 12. D 13. D 14. C 15. A 16. A 17. C 18. A 19. C 20.  B 21. B 22. A 23. B 24. B 25. B 26. A 27. C 28. B 29. D 30. C 31. B 32. D 33. A 34. ' 35. C 36. B 37. A 38. D 39. D 40. B 41. D 42. D 43. A 44. D 45. D 46. D 47. C 48. 49. B 50. D 51. D 52. B 53. A 54. A 55. B 56. D 57. A 58. D 59. C 60. D 61. B 62. B 63. D 64. D 65. B 66. B 67. D 68. B 69. C 70. C 71. D 72. A 73. D 74. C 75. B 76. D 77. B 78. C 79. D 80. A 81. C 82. C 83. B 

Online MCQS Preparation (MCAT Biology Book-1) Chapter No.5

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