Microbiology MCQs

Page No. 29

The usual concentration of agar used in agar medium is___________________?


a10%

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b2%

✓


c5%

✖


d15%

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View Answer 2%

The best skin disinfectant is________________?


aChlorhexdine

✓


bAlcohol

✖


cSavlon

✖


dNone of the above

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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

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b-7°C to + 20°C

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c25°C to 40°C

✓


d55°C to 80°C

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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

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c72°C for 5 minutes

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d72° for 15 – 20 Sec

✓



Spores are disinfected by_______________?


aGlutaraldehyde

✓


bBetapropiolactone

✖


cFormaldehyde

✓


dHexachlorophen

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View Answer Both A & C

Most of the drug resistances occurs due to_____________?


aTransduction

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b Transformation

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cMutation

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d conjugation

✓


View Answer conjugation

The antigen used in Weil Felix test is obtained from________________?


aPseudomonas

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bcoli

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cProteus

✓


dStaphylococcus

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View Answer Proteus

Endotoxins are produced by________________?


aEndotoxins are produced by________________?

✖


bFungi

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cGram +ve bacteria

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dVirusGram -ve bacteria

✓


View Answer Gram -ve bacteria

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