Microbiology MCQs

Page No. 29

The usual concentration of agar used in agar medium is___________________?


a10%


b2%


c5%


d15%


View Answer 2%

The best skin disinfectant is________________?


aChlorhexdine


bAlcohol


cSavlon


dNone of the above


View Answer Chlorhexdine

Culture medium for corynebacterium diphtheria_______________?


aLoefflers serum slope


bMc Conkey


cSaboraud agar


dLowenstein Jensen medium


View Answer Loefflers serum slope

Dorset’s egg medium is used for cultivation of______________?


aStaphylococcus


bStreptococcus


cGonococcus


dMycobacterium


View Answer Mycobacterium

Mesophilic organisms are those that grow best at temperature of______________?


a-20°C to -7°C


b-7°C to + 20°C


c25°C to 40°C


d55°C to 80°C


View Answer 25°C to 40°C

Flash pasteurization of milk is done at what temperature______________?


a125°C for new seconds


b60°C for 15 minutes


c72°C for 5 minutes


d72° for 15 – 20 Sec



Spores are disinfected by_______________?


aGlutaraldehyde


bBetapropiolactone


cFormaldehyde


dHexachlorophen


View Answer Both A & C

Most of the drug resistances occurs due to_____________?


aTransduction


b Transformation


cMutation


d conjugation


View Answer conjugation

The antigen used in Weil Felix test is obtained from________________?


aPseudomonas


bcoli


cProteus


dStaphylococcus


View Answer Proteus

Endotoxins are produced by________________?


aEndotoxins are produced by________________?


bFungi


cGram +ve bacteria


dVirusGram -ve bacteria


View Answer Gram -ve bacteria

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