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Microbiology

Microbiology
Coliform bacteria on fermentation of carbohydrates yields

formic acid
lactic acid
all of these
acetic acid

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Microbiology
The enzyme, which hydrolyses the murein is

lysozyme
tannase
none of these
perxoidase

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Microbiology
The growth of black-pigmented Bacillus nigrificans, a causative agent of black pickle is favoured by

low level of available nitrogen
All of these
presence of carbohydrate like glucose
neutral or slightly alkaline brine

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Microbiology
The media which serve(s) as enrichment media for Salmonella is/are

Brilliant green tetrathionate broth
Selenite-F broth
All of these
Tetrathionate broth

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Microbiology
Which of the following property(ies), shown by the organisms belong(s) to the family Enterobacteriaceae?

They are catalase-positive
They ferment glucose
All of these
They are oxidase-negative

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Microbiology
In Yersinia pestis, capsule is best demonstrated in cultures grown at

25°C
29°C
45°C
37°C

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