microbiology MCQs – Page 10

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

microbiology Mcqs
181. Flash pasteurization of milk is done at what temperature______________?
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A. 72 for 15 20 Sec

B. 60C for 15 minutes

C. 125C for new seconds

D. 72C for 5 minutes

182. Which of the following methods is adopted for screening HIV infection ?
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A. ELISA followed by western blot technique

B. Virus isolation

C. Polymers chain reaction

D. Western blot followed by ELISA

183. The anaphylaxis should be treated first with_____________?
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A. Epinephrine

B. Anti histamines

C. Antibiotics

D. Steroids

184. The following is not true of Candida albicans______________?
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A. Blastomeres seen in isolates

B. Seen in immunocompromised and causes meningitis in them

C. Yeast like fungus

D. Forms Chlamydospores

185. Which of the following does not go into chronic hepatitis stage ?
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A. HCV

B. HBV

C. HEV

D. HDV

186. Which of the following is not used as disinfectant________________?
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A. 1-2% cetrimide

B. 2% Lysol

C. 100% alcohol

D. 5% chloroxylene

187. The overall effect of HIV is to gradually impair the immune system by interference with______________?
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A. Plasma cells

B. Macrophages

C. Helper T lymphocytes

D. Natural killer cells

188. Toxoids are_________________?
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A. non-antigenic and toxic

B. non-antigenic and non-toxic

C. antigenic and non-toxic

D. antigenic and toxic

189. The time gap between appearance of Kopliks spot and cutaneous rash in measles is________________?
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A. 24 Hrs

B. 3-4 days

C. 10 days

D. 2 weeks

190. Characteristic feature of retrovirus is_____________?
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A. Restriction endonuclease

B. DNA polymerase

C. Ribonuclease

D. Reverse transcriptase
191. Hepatitis C virus belongs to which one of the following virus groups ?
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A. Flavi viruses

B. Picorna viruses

C. Herpes viruses

D. Hepadana viruses

192. In patients with asthma due to an allergic cause the serum levels of which immunoglobulin increase____________________?
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A. IgE

B. IgD

C. IgM

D. IgA

193. In penicillin allergy, penicillin acts as a_______________?
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A. Carrier

B. Super antigen

C. Toxin

D. Hapten
194. Human immunoglobulins are divided based on_____________?
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A. Structural differences

B. Complemented fixation

C. Functional differences

D. None of the above

195. EBV causes all except_________________?
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A. Papilloma

B. Infectious mononucleosis

C. Carcinoma of nasopharynx

D. Burkitts lymphoma

196. Cold sterilization refers to the process of sterilization by use of____________________?
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A. Infrared rays

B. Gamma rays

C. Ultrasonic vibrations

D. Ultra violet rays

197. Anaphylaxis refers to the________________?
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A. Severe reaction resulting from sensitivity to common allergens

B. Severe reaction following primary injection of Protein solutions

C. Severe reaction following the injection of protein solution in a sensitized individual

D. State of immunity developed by repeated injections of any foreign substance

198. Chemotactic cytokine is_________________?
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A. IL-8

B. TNF

C. IL-6

D. IL-1

199. Viron is defined as______________?
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A. A smallest particle similar to virus

B. Extracellular infectious virus particle

C. Smallest virus

D. None of the above

200. Components of innate immunity that are active against viral cells includes______________?
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A. NK Cells

B. Cytotoxic T cells

C. B cells

D. Memory B cells