microbiology MCQs – Page 4

Practise focused microbiology questions with marked answers for exam preparation and subject revision.

microbiology Mcqs
61. Plaque test is used routinely in virology labs for________________?
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A. To separate specific clone of virus

B. To maintain certain viral culture

C. To prepare vaccines

D. Identification of viral disease
62. Black water fever is caused by______________?
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A. Microfilaria

B. Leishmania donovani

C. Plasmodium falciparum

D. Plasmodium vivax

63. Exotoxins are____________________?
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A. None

B. Protein compound

C. Lipoprotein

D. Lipid-polysaccharide complex

64. Louis Pasteur is not associated with_______________?
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A. Introduction of complex media

B. Discovery of M. Tuberculosis

C. Discovery of Rabies Vaccine

D. Disproved spontaneous regression theory

65. The earliest identifiable cells of T-Cell lineage during maturation are_______________?
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A. CD7+ Pro-T-Cells

B. CD8+ Pro-T-Cells

C. CD8+ Pre-T-Cells

D. CD5+ Pre-T-Cells

66. Type of Human papilloma virus associated with carcinoma cervix_____________?
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A. 3,10,19

B. 16,18,31

C. Type 6,12,18

D. 6,8,11

67. All are true about Entamoeba histolytica except________________?
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A. Trophozoites colonise in the colon

B. Cysts are 4 nucleated

C. The chromatid bodies are stained by iodides

D. Cysts are 8 nucleated
68. True about HIV are all except______________?
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A. Macrophages are the reservoir

B. Attacks CD4 cells

C. DNA virus

D. Decrease CD4 count in late stages

69. Bacteriophage was discovered by_________________?
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A. Twort and dherelle

B. Metchinkoff

C. Robert koch

D. Menkin

70. Which of the following viruses produces both intranuclear and intracytoplasmic inclusion bodies_____________?
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A. Small pox

B. Chicken pox

C. Rabies

D. Measles
71. All are seen in a cysts of E. histolytica except_____________?
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A. Glycogen mass

B. Chromatid bars

C. Eccentric nucleus

D. Refractile nucleus
72. Blood agar is________________?
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A. Enriched media

B. Transport media

C. Simple media

D. Differential media

73. Disinfection of the rooms can be done by using_______________?
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A. Chlorine gas

B. High efficiency particle arrestors

C. 40% formaldehyde vapour

D. 20% phenol

74. Australian antigen is_______________?
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A. None of the above

B. HBV

C. HB Ag

D. HBs AG
75. Which of the following immunoglobulins has the highest mean serum concentration in humans_________________?
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A. IgG

B. IgD

C. IgA

D. IgM

76. Dry heat destroys microorganisms by_____________?
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A. Lysis

B. Coagulation of proteins

C. Oxidation

D. Hydrolysis of DNA

77. parasitic inflammation would show predominantly____________________?
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A. Lymphocytes

B. Neutrophilis

C. Eosinophils

D. Basophils

78. A 30 years old patient developed high fever of sudden onset. Peripheral blood smear showed cresent shaped gametocytes. Malaria pigment was dark brown in colour Which of the following malarial parasites is the causative agent ?
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A. Plasmodium vivax

B. Plasmodium ovale

C. Plasmodium malaria

D. Plasmodium falciparum
79. Endotoxins are produced by________________?
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A. Fungi

B. Gram +ve bacteria

C. Virus

D. Gram -ve bacteria
80. Interferon interferes with replication of virus at the time of_____________?
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A. Protein synthesis

B. DNA/RNA replication

C. When virus enters the cell

D. Uncoating of the virus proteins capsule