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Microbiology

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

Clostridia
Pseudomonas
Salmonella
None of these

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Microbiology
Heat-labile enterotoxin of Escherichia coli activates

both (a) and (b)
adenylate cyclase
guanylate cyclase
none of these

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Microbiology
Cloudiness of brine of glass-packed olives may be caused by

the lactics if fermentation of residual sugar resumes
film yeasts or moulds if air is available
salt-tolerant bacteria
All of these

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Microbiology
Selective media for the isolation of Shigella is

All of these
Hektoen enteric agar
Salmonella-Shigella agar
Xylose lysine deoxycholate agar

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Microbiology
Bacteria are

all of these
symbiotic
saprophytic
hyper parasitic

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Microbiology
Shriveling in fermented pickles results from the physical effect of

too strong sugar solution
all of these
too strong vinegar solution
too strong salt solution

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