Quiznetik

Microbiology | Set 3

1. Histones are found in

Correct : B. Eukaryotes

2. Cell wall of gram negative bacteria is

Correct : C. Teichoic acids are absent

3. Cytoplasmic streaming is present in

Correct : C. Eukaryotes

4. The motile bacteria is

Correct : A. S. typhi

5. The stain used to demonstrate fungus

Correct : C. Lactophenol cotton blue

6. Exotoxina are

Correct : A. Heat labile

7. The viruses that attack bacteria are

Correct : C. Bacteriophages

8. The size of virus particle may range

Correct : C. 0.015–0.2 ìm

9. The bacterial cell multiplication is usually by

Correct : D. Binary-fission

10. Rod shaped bacteria are known as

Correct : C. Bacilli

11. All the groups of bacteria have cell wall

Correct : B. Mycoplasmas

12. Thickness of cell wall ranges from

Correct : C. 10-25 nm

13. Teichoic acids and Teichuronic acids are found in

Correct : A. Gram positive bacteria

14. Meosomes are

Correct : D. Principal sites of respiratory enzymes

15. The characteristic shape of the bacteria is maintained because of

Correct : B. Cell wall

16. Bacterial capsule is chemically composed of

Correct : D. Polypeptides or polysaccharides

17. The cell wall deficient form of bacteria is

Correct : B. ‘L’ form

18. Mesosomes are also known as

Correct : D. Chondroids

19. The differences between Gram positive and Gram negative bacteria is shown to reside in the

Correct : A. Cell wall

20. Capsule formation occurs in the presence of

Correct : C. Serum

21. The virulence determining antigens of microorganisms may be

Correct : D. All of these

22. Organelles with hydrolytic enzymes are

Correct : C. Lysosomes

23. Bacterial locomotion is accomplished by

Correct : D. Both a and b

24. Fimbriae are demonstrated by

Correct : D. Haemaggulation test

25. The motile bacteria is

Correct : A. Salmonella typhi

26. Following cocci are non-motile except

Correct : D. Rhodococcus agilis

27. Metachromatic granules are chemically composed of

Correct : C. Polymetaphosphates

28. Metachromatic granules can be stained with

Correct : B. Methylene blue

29. Bacteria multiply by

Correct : B. Simple binary fission

30. Bacterial spores are

Correct : A. Weakly acid fast

31. Endospores can be stained with

Correct : D. Malachite green

32. The order of stains in Gram-stainingn procedure is

Correct : A. Crystal violet, Iodine solution, Alcohol, Saffranine

33. The percentage of alcohol used in Gramstaining is

Correct : B. 90%

34. Gram positive bacteria appear as

Correct : B. Violet

35. Gram negative bacteria appear as

Correct : A. Pink

36. The action of alcohol during Gramstaining is

Correct : C. Decolorises the cells

37. Lipid contents is more in

Correct : A. Gram negative bacteria

38. Cell-wall is

Correct : A. Thick in Gram positive than Gram negative

39. The Lipid content present in Gram positive bacterial cell-wall is

Correct : B. 1-5 %

40. Rickettsiae stained by this technique responds as

Correct : B. Gram negative

41. Chlamydiae occur in

Correct : D. a and b

42. Chlamydiae can be stained better with

Correct : D. Both b and c

43. Algae means

Correct : B. Sea weeds

44. The study of algae is known as

Correct : B. Phycology

45. The free floating algae are known as

Correct : A. Phytoplankin

46. Sexual reproduction of algae is carried by

Correct : D. All the above

47. In algae, advanced type of sexual reproduction is

Correct : C. Oogamy

48. Alginic acids and its salts are obtained from the wall of

Correct : B. Brown algae

49. The molds obtained nutrition from dead and decaying matter which are called

Correct : A. Saphrophyte

50. Most molds are capable of growing in the temperature range between

Correct : B. 0o – 35oC

51. Examples for actinomycetes

Correct : D. Dermatophillia

52. Pellicle is found in only

Correct : D. Protozoans

53. The Largest virus is

Correct : B. Pox virus

54. The smallest virus is

Correct : B. Rhabdo virus

55. The extra cellular infections virus particle is called

Correct : C. Virion

56. Shape of bacteriophage is

Correct : D. Tadpole shape

57. If only one stain is used for staining a specimen

Correct : A. Simple staining

58. Other than the sample (specimen) the remaining portion is stained then it is called

Correct : B. Negative staining

59. If more than one stain is used, such staining is called

Correct : C. Differential staining

60. ‘Fluorescence’ was first observed by

Correct : A. Kohler

61. By using fluorescence property fluorescent antibody technique was developed by

Correct : B. Coons

62. During staining for Electron Microscopy, the method which improves contrast of specimen is

Correct : B. Negative staining

63. The inorganic forms of nitrogen, which are accepted by bacteria are

Correct : D. All of these

64. Archaeo bacteria are known as

Correct : B. Red extreme halophiles

65. Nitrite is converted into nitrate by the bacteria

Correct : C. Nitrobacter

66. Sulphur oxidizing bacteria is

Correct : C. Thiobacillus

67. Bacillus Schlegelli is

Correct : A. Hydrogen – Oxydising bacteria

68. The group of bacteria which deopends on organic sources in nature for their energy requirements. They are said to be

Correct : C. Heterotrophes

69. Majority of bacteria are

Correct : D. Parasites

70. Symbionts are

Correct : C. The groups participating in symbiotic association

71. The best example for symbiotic association is

Correct : B. Lichens

72. The enzymes responsible for decomposition is

Correct : B. Proteolytic

73. Urea is decomposed by the species

Correct : D. Both a and c

74. Phycobiont is

Correct : A. The algal part in Lichens

75. Parasitic form must contain

Correct : A. Capsule

76. The total no. of genes in the group of same individuals is

Correct : C. Gene pool

77. Transformation was observed mainly in

Correct : B. Temperate phages

78. Capsulated forms of bacteria are

Correct : C. Useful

79. The bacterial cells participating in conjugation are

Correct : A. Conjugant

80. Phagocytes are

Correct : D. All of these

81. The microorganism engulfed by phagocyte resides in a vacuole is known as

Correct : A. Phagosome

82. Toxic products in phagolysosome are

Correct : D. All of these

83. During destruction of antigen particle in phagolysosome the product formed in phagolysosome the product formed during formulation is

Correct : B. Lactic acid

84. The coating of a bacterium with antibody or complement that leads to enhanced phagocytosis of the bacterium by phagocytes is called

Correct : A. Opsonisation

85. Attenuation means

Correct : B. Inactivation of bacteria

86. Infection that results in pus formation are called

Correct : C. Pyogenic infection

87. Presence of viable bacteria in the blood stream is called

Correct : C. Bacteraemia

88. Presence of viruses in the blood stream is known as

Correct : A. Viraemia

89. Opsonin is the

Correct : C. Serum component

90. β-haemolytic bacteria is

Correct : A. Streptococcus pyogenes

91. The natural reservoir of infection for cholera is

Correct : C. Man

92. Main cause for Cholera is

Correct : A. Poverty and insanitation

93. Vibrio cholera differs from vibrio eltor by

Correct : D. Causes less subclinical infections as compared

94. Cholera vaccine gives protection for

Correct : B. 3 – 6 months

95. Prophylaxis of cholera is

Correct : D. All of these

96. Sh.dysenteriae is also known as

Correct : C. Both a and b

97. Acid fast bacteria are

Correct : C. Mycobacteria

98. Mycobacteria are stained with

Correct : D. Ziehl – Neelsen’s staining

99. Niacin test is positive in case of

Correct : B. M. tuberculosis

100. Lepromin test

Correct : C. Indicated delayed hypersensitivity test