microbiology MCQs – Page 12

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

microbiology Mcqs
221. Secondary response is mediated by_______________?
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A. IgA

B. IgG

C. IgE

D. IgM

222. HIV is transmitted by all of the following routes except________________?
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A. Blood transmission

B. Needle prick injury

C. Sexual intercourse

D. Saliva
223. Half-life of free HIV in plasma is________________?
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A. 24 hours

B. 12 hours

C. 6 hours

D. 3 months

224. The reaginic antibody is________________?
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A. IgD

B. IgG

C. IgA

D. IgE
225. Normal ratio of CD4 (T4) : CD8 (T8) is_________________?
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A. 1:02

B. 2:1

C. 1:03

D. 3:01

226. Which of the following microbial cell is most resistant to antiseptics & disinfectants ?
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A. Mycobacteria

B. Spore

C. Coccidia

D. Prions
227. The term animalcules to oral microorganisms is given by__________________?
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A. Robertson

B. Leumenhoek

C. Socranci

D. Wd miller

228. Who first introduced solid media_______________?
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A. Louis pasteur

B. Robert koch

C. Hensen

D. Ogston

229. Prions true is____________?
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A. Evokes strong immunogenic reaction

B. Contains DNA/ RNA

C. Readily inactivated by autoclave at 121 C

D. Sensitive to most chemical sterilization

230. Most fungi of medical importance belongs to__________________?
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A. Ascomycetes

B. Basidiomycetes

C. Zygomycetes

D. Deuteromycetes
231. Lesions caused by Entameoba histolytica predominantly involve________________?
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A. Jejunum and Ileum

B. Caecum and large intestine

C. Stomach

D. Duodenum

232. Sterilization of liquid paraffin is done by______________?
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A. Autoclaving

B. Hot air oven

C. UV-Radiation

D. Inspissation

233. The mechanism by which most fungi caused disease is ________________?
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A. hypersensitivity

B. Coagulase production

C. exotoxin production

D. lecithinase production

234. Highest incidence of anemia in the tropics is due to______________?
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A. Guinea worm

B. Thread worm

C. Hook worm

D. Ascaris

235. The Dane particle is the______________?
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A. Delta Virus

B. HBC Ag

C. HBV

D. IgG anti HAV

236. The HIV virus can be destroyed invitro by which of the following_____________?
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A. Ethanol

B. Boiling

C. Cidex

D. All of the above
237. Pseudohphae are seen in____________?
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A. Aspergillus

B. Osporium

C. Alternaria

D. Candida albicans
238. The culture media for fungus is__________________?
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A. NNN medium

B. Chocolate agar medium

C. Sabourauds medium

D. Tellurite medium

239. The cell wall deficient bacteria_______________?
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A. Chlamydiae

B. Rickettsiae

C. Ehrlichiae

D. Mycoplasma
240. A type of immediately occuring reaction in which antigens combine with antibodies already attached to the surface of mast cells and basophils is called_____________?
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A. Type I hypersensitivity

B. Type IV hypersensitivity

C. Type III hypersensitivity

D. Type II hypersensitivity