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Microbiology

Microbiology
Which of the following genus belongs to family Spirochaetaceae?

All of these
Borrelia
Spirochaeta
Treponema

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Microbiology
Enterobacter can be differentiated from Klebsiella by

ornithine positivity
motility
both (a) and (b)
none of these

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Microbiology
An excessively high temperature in the fermentation of sauerkraut may inhibit the growth of

Leuconostoc
none of these
Pediococcus cerevisiae
both (a) and (b)

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Microbiology
Too long a fermentation of sauerkraut may favour the growth of

Bacillus subtilis
Lactobacillus lactis
none of these
Lactobacillus brevis

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Microbiology
Which of the following property(ies) is/are seen in the members of family Enterobacteriaceae?

They reduce nitrates to nitrites
They are catalase-positive
They are oxidase-negative
They ferment glucose

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Microbiology
Coliform bacteria on fermentation of carbohydrates yields

formic acid
all of these
acetic acid
lactic acid

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