Multiple Choice Questions (MCQ) on Microbiology
21- Dermatophyte infecting hair & skin only :
(A) Microsporum
(B) Trichophyton
(C) Epidermophyton
(D) All of the above
22- The human microbiome is correctly defined as
(A) Microorganisms found in human faces
(B) Microorganisms residing on human surface (skin)
(C) All microorganisms found on any part of the human body
(D) Bacteria and Archea found in the human intestine
23- Autoclaving is the method to sterilize :
(A) Inoculating wire loops
(B) Surgical Instruments
(C) Loeffler’s serum slope
(D) Plasma
24- Ames test detects mutagens on the basis of their effect on
(A) live bacteria
(B) bacterial extracts
(C) liver cells
(D) liver extracts
25- BCG vaccine is:
(A) a live attenuated vaccine
(B) a subunit vaccine
(C) a killed vaccine
(D) a synthetic peptide vaccine
26- HEPA filters are related to
(A) Water purification systems
(B) Biological safety hoods
(C) Sewage treatment plants
(D) Industrial bioreactors
27- Diagnosis of Typhoid fever in the first week is by
(A) Widal test
(B) Urine culture
(C) Stool culture
(D) Blood culture
28- Bacterial growth yield is biomass produced
(A) In a specified time
(B) Per mass of substrate consumed
(C) At the end of fermentation
(D) Per litre of the fermentation broth
29- Which of the following cause congenital infection?
(A) Toxoplasma
(B) Cytomegalovirus
(C) Rubella virus
(D) All of the above
30- Oral Polio vaccine contains
(A) Live attenuated virus
(B) Inactivated (killed) virus
(C) Live virulent virus at very low titer
(D) Incomplete virus
ANSWERS:
21-(A), 22-(C), 23-(B), 24-(A), 25-(A), 26-(B), 27-(D), 28-(B), 29-(D), 30-(A)