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Microbiology

Microbiology
The application of Gamma rays destroys botulism toxin. The dose of gamma rays required for this purpose is

173 Rad
73 Rad
73 Gy
7.3 Mrad

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Microbiology
Which of the following is/are not a gram-positive bacteria?

None of these
Streptococci
Mycobacteria
Pseudomonas

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

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

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Microbiology
Heat-stable enterotoxin of Escherichia coli activates

adenylate cyclase
both of the above
none of these
guanylate cyclase

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Microbiology
Sereny test is used for the detection of

enterotoxigenic E. coli
enteroinvasive E. coli
enteropathogenic Escherichia coli
verotoxigenic E. coli

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Microbiology
Hollow pickles are obtained as a result of

too strong or too weak brine
loose packing in the vat
both (a) and (b)
none of these

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