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Microbiology

Microbiology
Primarily human pathogenic bacteria is/are ,

Salmonella typhi
S paratyphi A
all of these
S paratyphi B

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Microbiology
Blackening in pickles occurs due to

both (a) and (b)
the formation of hydrogen sulfide by bacteria
growth of Pencillium
None of these

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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 oxidase-negative
They are catalase-positive
They ferment glucose

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Microbiology
The technique(s), used for the assay of heat-labile enterotoxin produced by Escherichia coli, is/are

Morphological changes in Chinese hamster ovary
Steroid production in Yl mouse adrenal cell culture
All of these
Enzyme-linked immunosorbent assay

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

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

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Microbiology
The agent(s) which can cause plague is/are

Proteus mirabilis
Yersinia pestis
All of these
Pseudomonas aeruginosa

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