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Microbiology

Microbiology
The bacteria, which is more resistant to adverse environmental conditions, is

S boydii
S flexneri
S sonnei
S dysenteriae

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Microbiology
Blackening in pickles occurs due to

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

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Microbiology
Heat-labile enterotoxin of Escherichia coli activates

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

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

All of these
Pseudomonas aeruginosa
Yersinia pestis
Proteus mirabilis

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Microbiology
Group I C. botulinum strains generally includes in

all types of strains (non-proteolytic) E and F
all types of strains (proteolytic)A, B and F
all types of strains (proteolytic)C, D and F
None of these

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Microbiology
Salmonellae can also be killed by

boiling
pasteurisation
chlorination
all of these

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