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Microbiology

Microbiology
The bacteria which produce(s) β-galactosidase is/are

Serratia
Citrobacter
Enterohacter
all of these

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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
Enzyme-linked immunosorbent assay
All of these
Steroid production in Yl mouse adrenal cell culture

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Microbiology
Which of the following toxin causing botulism is less toxic to human beings?

Type C
None of these
Type A
Type B

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Microbiology
Sereny test is used for the detection of

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

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Microbiology
Gram-positive bacteria, responsible for food poisoning, is/are

all of these
Pseudomonas
Mycoplasmas
Clostridia

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Microbiology
The favouring conditions for floaters is

high intial amounts of salt
thick skin that does not allow gas to diffuse out
none of these
both (a) and (b)

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