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


cType III hypersensitivity


dType IV hypersensitivity



Tyndallisation is carried out for________________?


aOne day


bTwo successive days


c60 minutes


dThree successive days


View Answer Three successive days

Sunlight acts as sterilizing agent because_________________?


aLong wavelength


bshort wave lenght


cOzone


dHeat


View Answer short wave lenght

Which of the following is not true of boiling water_____________?


aIt can kill hepatitis B virus


bUsed for sterilizing surgical instruments


cCan kill mycobacterium tuberculosis


dCan kill vegetative bacterial cells



In penicillin allergy, penicillin acts as a_______________?


aHapten


bCarrier


cSuper antigen


dToxin


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


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


cPure cultures can be obtained


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



The anaphylaxis should be treated first with_____________?


aEpinephrine


bSteroids


cAnti histamines


dAntibiotics


View Answer Epinephrine

Dry heat destroys microorganisms by_____________?


a Lysis


bOxidation


cHydrolysis of DNA


dCoagulation of proteins


View Answer Oxidation

Robertsons cooked meat medium is best suited for cultivation of_______________?


aClostridia


bS. epidermidis


cCholeria


dMycobacterium


View Answer Clostridia

The medium of choice for growing most fungi is_______________?


aBlood agar


bTissue culture


cSabouraud’s agar


dThioglycollate medium


View Answer Sabouraud’s agar

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