microbiology MCQs – Page 14

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

microbiology Mcqs
261. One virus particle prevents multiplication of 2nd virus. This phenomena is____________?
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A. Permutation

B. Supervision

C. Mutation

D. Viral interference
262. The following statement is true regarding fungal infection__________________?
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A. Rhinosporidium causes deep infection in man

B. Dermatophyte infection are exclusively man to animal

C. Candida infection is usually endogenous

D. albicans is not pathogenic to lab animals

263. DNA covering material in a virus is called as________________?
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A. Capsomere

B. Capsid

C. Nucleocapsid

D. Envelope

264. The Process of attenuation can be achieved by all except___________________?
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A. Growing bacteria in adverse environment

B. Growing bacteria in unconventional host

C. Serial passage in an experimental host

D. Repeated cultures in artificial media

265. Dengue Hemorrhagic fever is caused by_____________?
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A. Bacteria

B. Parasite

C. Virus

D. Bacteria superadded on virus

266. Most of the drug resistances occurs due to_____________?
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A. Transformation

B. Transduction

C. conjugation

D. Mutation

267. The world german measles is applied for_____________?
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A. Herpes simplex

B. Herpetic ginglvostomatitis

C. Rubeola

D. Rubella
268. Rapid evaluation of fungal hyphae/spores can be achieved with_______________?
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A. KOH wet mount

B. Grocott Gomori Methenamine silver

C. Peri-iodic Acid Schiff

D. Hematoxylin and Eosin

269. Moist heat kills all of the following EXCEPT_______________?
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A. Coxiella burnetti

B. Mycobacterium

C. Brucella

D. Salmonella

270. Group A carbohydrate of Str. pyogenes cross reacts with human_________________?
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A. Cardiac valves

B. Vascular intima

C. Synovial fluid

D. Myocardium

271. All are true about widel test except________________________?
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A. H antigen cannot differentiate between subtypes

B. High titre value in a single widal test is not confirmative

C. O antibodiest last longer and hence is not indicative of recent infection

D. Base lines differ depending on the endemicity of the disease

272. A 6 year old boy comes with abdominal pain, vomiting after consuming mild products within 6 hours. The most likely organism responsible is______________?
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A. B.Cereus

B. Salmonella

C. Clostridium botulinum

D. Staph. aureus
273. Growth factor needed for Salmonella_________________?
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A. B-12

B. Citrate

C. Niacin

D. Tryptophan
274. compared with autoclave, use of a dry heat over for sterilization has the following disadvantages______________?
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A. Causes sharp instruments to dull

B. Time-consuming

C. Causes instruments to rust

D. Less effective

275. VDRL is a________________?
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A. Tube agglutination test

B. Latex agglutination test

C. Tube flocculation test

D. Slide flocculation test
276. Anaerobic bacteria grow_______________?
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A. in the presence of oxygen

B. in the presence of nitrogen

C. differential media

D. in the absence of oxygen
277. The commonest method of detection of diptheria carriers is_______________?
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A. Schick test

B. Casonis test

C. Dick test

D. Charles test

278. One of the following is a treponemal test for diagnosis of syphilis_____________?
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A. FTAB

B. Widal test

C. Kahn test

D. Wasserman test

279. cAMP reaction is shown by which streptococci ?
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A. Group A

B. Group D

C. Group C

D. Group B
280. Which of the following organisms are arranged in cubical packets of eight cocci________________?
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A. Aerococcus

B. Sarcina

C. Micrococcus

D. Staphylococcus