Quiznetik

Microbiology | Set 10

1. Nalidixic acid activity is due to

Correct : A. The inhibition of DNA synthesis

2. The best test for the susceptibility of a microorganism to antibiotics and other chemotherapeutic agents:

Correct : C. Both a and b

3. The smallest amount of chemotherapeutic agents required to inhibit the growth of the organism in Vitro is known as

Correct : A. MIC (minimum inhibitory concentration)

4. Clear-zones formation around antibiotic disc is due to

Correct : B. Lysis of the bacterial cells surrounding the disc

5. Bacitracin is obtained from

Correct : A. subtilis b.

6. Vancomycin is obtained from

Correct : C. Streptomyces orientalis

7. â-lactum antibiotics are

Correct : C. Both a & b

8. Virus causing mumps is also responsible for

Correct : A. Measle

9. Epidemic pleurodynia and myocarditis of new born infants are both caused by

Correct : A. Group B cox sack virus

10. Human papillomavirus causes following tumors:

Correct : A. Hepatic carcinoma

11. Viral infection is caused due to

Correct : D. All of these

12. Viruses which have teratogenic property are

Correct : D. All of these

13. Kawasaki syndrome is

Correct : D. All of these

14. Mode of action of quinolone antibiotics on growing bacteria was thought to be

Correct : C. Inhibition of DNA gyrase

15. The role that human play in the plague life cycle is

Correct : D. Accidental intruder in rat flea cycle

16. Which organism is responsible for causing fever to a man dealing with goats?

Correct : D. Brucella melitensis

17. The parasite related to ancylostoma duodenale is

Correct : B. Necatur americanes

18. Which of the following amoeba does not live in large intestine ?

Correct : D. Entamoeba gingivalis

19. Which of the following is not related to congenital syphilis?

Correct : A. Aneurysm

20. Streptococcus pyogens produce infection –

Correct : A. Streptococcal sore throat

21. Salmonella which can cause prolong septicaemia.

Correct : B. Salmonella cholerasuis

22. E.coli produce which type of toxins?

Correct : D. Both a and b

23. Main causative organism of gas gangrene is

Correct : D. Cl.perfringens

24. Causative organism of whooping cough is

Correct : A. Bordetella pertussis

25. Pfeiffer phenomenon is related to

Correct : A. Vibrio cholerae

26. Diagnostic test for the identification of primary syphilis:

Correct : D. Dark ground microscopic examination

27. Sporadic summer diarrhea may be caused by

Correct : A. E.coli

28. Biological false reaction in VDRL is related to

Correct : A. Lepra bacilli

29. The best medium for the production of Penicillin is

Correct : B. Corn steep liquor

30. Industrially important Antibiotic producing organisms shall be isolated by

Correct : D. Crowded plate method

31. Industrial alchohol will be produced by using starter culture

Correct : C. Bottom yeast

32. Pyruvate decarboxylase acetaldehyde + CO2 = This reaction is specially observed in

Correct : B. Ethanol fermentors

33. The pyruvate, dehydrogenase → multienzyme complex does not occur in

Correct : B. Microphilic bacteria

34. A major ingradient of penicillin production media is

Correct : B. Corn steep liquor

35. the outstanding example of traditional microbial fermentation product is

Correct : A. Vinegar

36. Which of the following involves the formation of nitrate from ammonia

Correct : C. Nitrification

37. First genetically engineered and biotechnologically produced vaccine was against

Correct : B. Small pox

38. one of the standard cloning vector widely used in gene cloning is

Correct : C. pBR 322

39. In alchoholic fermentation, CO2 is evolved during

Correct : D. Both a and b

40. In the industrial production of streptomycin, the secondary metabolite or byproducts is

Correct : A. Vitamin – B12

41. Tobacco and tea leaves are fermented to give flavour and taste. This type of fermentation is known as

Correct : B. Curing

42. Vinegar fermentation involves

Correct : C. Yeasts with acetic acid bacteria

43. Carcinoma refers to

Correct : D. Malignant tumors of the connective tissue

44. By-product of acetone-butanol fermentation include

Correct : A. Riboflavin

45. Transgenic animals are for improvement of the quality of

Correct : D. All of the above

46. Thermo resistant bacteria are important in the preservation of foods by

Correct : B. Canning

47. The fungus used in the industrial production of citric acid:

Correct : D. Aspergillus nigricans

48. Penicilin is commercially produced by

Correct : B. P.chrysogenum

49. The most commonly used microorganism in alchohol fermentation is

Correct : A. A spergilus niger

50. V itam in B12 can be estimated and determined by using organism

Correct : B. Lactobacillus Leichmanni

51. Batch fermentation is also called

Correct : A. Closed system

52. To differentiate lactose and non-lactose fermentors the medium used is

Correct : A. Mac Conkey’s medium

53. The micro-organism useful for fermentation are

Correct : B. Yeast

54. Industrial microbiology, mainly depends on the phenomenon

Correct : B. Fermentation

55. Streptokinase is also termed as

Correct : A. Fibrionolysin

56. Streptokinase is produced by

Correct : D. Str. pyogenes

57. Large vessel containing all the parts and condition necessary for the growth of desired microorganisms is called

Correct : A. Bio reactor

58. Basic principle in industrial microbiology is

Correct : B. Fermentation

59. For thorough mixing of medium of medium and inoculum the part of fermentor useful is

Correct : C. Impeller

60. Infermentor the top portion left without broth is called

Correct : B. Head space

61. Over heating of fermentator during fermentation is controlled by

Correct : A. Cooling jacket

62. Antifoam agent is

Correct : D. All of these

63. The capacity of laboratory fermentors is

Correct : A. 12–15 liter

64. For the production of ethanol the raw material used is

Correct : C. Sulphite waste liquor

65. Different methods of strain improvement are

Correct : D. All of these

66. Protoplasts can be prepared from

Correct : B. Gram negative bacteria

67. Upto the product ion of des irab le production in the fermentor is called

Correct : B. Downstream process

68. The purification and recovery of the production after fermentation is called

Correct : B. Downstream process

69. If the microorganisms are allowed to nutrient medium is called

Correct : B. Surface fermentation

70. Submerged fermentations are

Correct : C. Both a and b

71. Batch fermentation is also called

Correct : A. Closed system

72. If more than one microorganism is used to obtain the required product, that type of fermentation is called

Correct : C. Dual

73. L. lysine is produced from

Correct : A. Coryne bacterium glutamicum

74. Methods used to get immobilized enzymes:

Correct : D. All of these

75. Raw-material used for the production of alcohol is

Correct : D. All of these

76. Microorganisms used for alcohol production

Correct : A. Saccharomyces sereviceae

77. For streptomycin production the microorganisms required are

Correct : A. Streptomyces griseus

78. The by-product during streptomycin production is

Correct : C. Vitamin B12

79. For acetic acid production the methods followed are

Correct : D. All of these

80. For amy lase product ion the m icro organism required is

Correct : A. subtilis

81. Pectinase is industrially produced from

Correct : C. A. nigar

82. Cellulose are produced from

Correct : B. Trichoderma Koningi

83. Industrial Production of Vitamin-B12 is from

Correct : C. Both a and b

84. Clostridium acetobutylicum is used for the production of

Correct : B. Ethanol

85. In the production of ethanol industrially the yeast used is

Correct : D. Both b and c

86. Citric acid is used as

Correct : D. All of the above

87. C itr ic ac id is produced in aerob ic conditions by the fungi

Correct : D. All of these

88. The raw material for citric acid production is

Correct : A. Corn

89. Aspergillus niger is used generally for the production of

Correct : C. Citric acid

90. In the citric acid production, the pH to be maintained in the fernmenter is

Correct : B. 5.0 to 6.0

91. The penicillin produced in large scale submerged fermentations are

Correct : C. Penicillin-G

92. The strain of fungi used for the large scale production of penicillin is

Correct : A. Penicillium chrysogenum

93. 6-amino penicillic acid is prepared from penicillin sps by

Correct : B. Punicillin acylase

94. The pH , to be ma inta ined for the production of penicillin is

Correct : B. 6.5