Microbiology MCQs

Page No. 27

A type of immediately occuring reaction in which antigens combine with antibodies already attached to the surface of mast cells and basophils is called_____________?


aType I hypersensitivity

✓


bType II hypersensitivity

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cType III hypersensitivity

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dType IV hypersensitivity

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Tyndallisation is carried out for________________?


aOne day

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bTwo successive days

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c60 minutes

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dThree successive days

✓


View Answer Three successive days

Sunlight acts as sterilizing agent because_________________?


aLong wavelength

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bshort wave lenght

✓


cOzone

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dHeat

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View Answer short wave lenght

Which of the following is not true of boiling water_____________?


aIt can kill hepatitis B virus

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bUsed for sterilizing surgical instruments

✓


cCan kill mycobacterium tuberculosis

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dCan kill vegetative bacterial cells

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In penicillin allergy, penicillin acts as a_______________?


aHapten

✓


bCarrier

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cSuper antigen

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dToxin

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View Answer Hapten

Which of the following is not a koch’s postulate ?


aThe bacteria should be able to be isolated from a diseased tissue

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bWhen inoculated in experimental animals bacteria may or may not cause disease

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cPure cultures can be obtained

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dBacteria should be able to be isolated from the diseased tissue in the experimental animals

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The anaphylaxis should be treated first with_____________?


aEpinephrine

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bSteroids

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cAnti histamines

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dAntibiotics

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View Answer Epinephrine

Dry heat destroys microorganisms by_____________?


a Lysis

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bOxidation

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cHydrolysis of DNA

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dCoagulation of proteins

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View Answer Oxidation

Robertsons cooked meat medium is best suited for cultivation of_______________?


aClostridia

✓


bS. epidermidis

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cCholeria

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dMycobacterium

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View Answer Clostridia

The medium of choice for growing most fungi is_______________?


aBlood agar

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bTissue culture

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cSabouraud’s agar

✓


dThioglycollate medium

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View Answer Sabouraud’s agar

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