microbiology MCQs – Page 25

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

microbiology Mcqs
481. Which of the following is an acid-fast bacillus_____________?
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A. Mycobacterium bacilli

B. Treponema pallidum

C. Neisseria gonorrhea

D. All of the above

482. The immediate type of hypersensitivity in which histamine doses not play a major role is______________?
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A. Asthma

B. Anaphylaxis

C. Urticaria

D. Arthus reaction
483. The major intestinal pathogens which are non-lactose fermenters are_________________?
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A. Klebsiella

B. Paracolons

C. Salmonella

D. Escherichia

484. One of the following is an agglutination test in the diagnosis of typhoid___________?
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A. Wasserman test

B. Mantoux test

C. Widal test

D. Eleks test

485. Endotoxins differ from exotoxins in that endotoxins______________?
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A. are highly antigenic

B. activate complement by the alternate pathway

C. are proteins

D. are heat labile

486. Among The infectious diseases transmitted by food, one is___________________?
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A. Typhoid fever

B. Viral stomatitis

C. Tuberculosis

D. Diptheria

487. The Manufacturing unit of surgical needle & sutures are sterilized by ________________?
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A. X-Rays

B. Autoclaving

C. Gamma-Rays

D. Boiling

488. Pneumococus can be differentiated from streptococcus by________________?
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A. Bile solubility

B. Gram staining

C. Growth characteristics

D. Type of hemolysis

489. The best method of sterilization of dressing powder is_____________?
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A. Tyndallization

B. Inspissation

C. Autoclaving

D. Hot air oven
490. The difference between gram positive and negative bacteria lies in their_______________?
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A. Nuclear material

B. cell membrane

C. Mesosomes

D. cell wall
491. Teichoic acid is present in cell walls of_________________?
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A. Yeast

B. Gram positive bacteria

C. Gram negative bacteria

D. Protozoa

492. Q fever is caused by________________?
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A. R. prowozekii

B. C. burnetti

C. Rickettsia tsutsugamushi

D. R. quintana

493. Exaltation is________________?
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A. No change

B. Decreased virulence

C. Increased Virulence

D. None

494. The serum concentration of which of the following human IgG subclass is maximum ?
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A. IgG1

B. IgG2

C. IgG4

D. IgG3

495. The temperature required for cultivating mycobacterium________________?
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A. 0 degree

B. 2 degree

C. 37 degrees

D. 27 degrees

496. Which of the following fulfil all the criterias of kichs postulates ?
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A. N. gonorrhoeae

B. Mycobacterium leprae

C. None of the above

D. Treponema pallidum

497. Haptane is_______________?
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A. Carrier required for specific antibody production

B. None of the above

C. High molecular protein

D. Same as epitopes

498. False +ve for VDRL is seen in______________?
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A. Yaws

B. Lepromatous Leprosy

C. All of the above

D. Malaria

499. Disinfection frees the surface from______________?
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A. Vegetative forms

B. Spore forms

C. Both of the above

D. None of the above

500. Most antibodies are produced in the________________?
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A. Thymus and the appendix

B. Brain and the meninges

C. Heart and the liver

D. Spleen and the lymph nodes