A. Glutaraldehyde
B. Betapropiolactone
C. Formaldehyde
D. Hexachlorophen
✅ The correct answer is option E. Both A & C.
Microbiology MCQs
242. Which of the following lesions is NOT an infection from human papilloma virus ?
A. Verruca vulgaris
B. Focal epithelial hyperplasia
C. Condyloma acuminatum
D. Keratoacanthoma
✅ The correct answer is option Keratoacanthoma.
243. Dengue Hemorrhagic fever is caused by_____________?
A. Virus
B. Bacteria
C. Parasite
D. Bacteria superadded on virus
✅ The correct answer is option Virus.
244. Which one of the following enteric organisms is anaerogenic and non motile ?
A. Shigella sonnei
B. Salmonella typhi
C. Proteus mirabilis
D. Klebsiella pneumonia
✅ The correct answer is option Shigella sonnei.
245. About Psedomonas. All are true except________________?
A. Strick aerobes
B. Can grow in disinfectants in hospital
C. Infection is mostly due to endogenous source
D. Most common organism is burn patient
✅ The correct answer is option Infection is mostly due to endogenous source.
246. The culture media for fungus is__________________?
A. Tellurite medium
B. NNN medium
C. Chocolate agar medium
D. Sabourauds medium
✅ The correct answer is option Sabourauds medium.
247. Pathogenesis of diphtheria is attributed to__________________?
A. Invasion
B. Endotoxin
C. Exotoxin
D. Capsule
✅ The correct answer is option Exotoxin.
248. Actinomycosis is caused by______________?
A. Fungus
B. Acid fast, non-motile bacillus
C. Anaerobic, gram positive, non-acid fast bacteria.
D. Retrovirus
✅ The correct answer is option Anaerobic, gram positive, non-acid fast bacteri.
249. Cleavage of IgG molecule by Papin gives rise to:One Fc fragment and two Fab fragments_______________?
A. One Fc fragment and two Fab fragments
B. One Fc fragment and four Fab fragments
C. Two Fc fragments and two Fab fragments
D. Two Fc fragment and one Fab fragment
✅ The correct answer is option One Fc fragment and two Fab fragments.
250. In falciparum malaria, causes of anemia are due to all except__________________?
A. Hemolysis
B. Malabsorption
C. Spleen sequestration
D. Bone marrow depression
✅ The correct answer is option Malabsorption.