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Microbiology

Microbiology
Transmission of bubonic plague is by

ingestion
all of these
rat flea
inhalation

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Microbiology
Bipolar staining is characteristic of

all of these
Pseudomonas aeruginosa
Proteus mirabilis
Yersinia pestis

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Microbiology
Salmonellae can also be killed by

chlorination
boiling
pasteurisation
all of these

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Microbiology
The growth of black-pigmented Bacillus nigrificans, a causative agent of black pickle is favoured by

low level of available nitrogen
presence of carbohydrate like glucose
All of these
neutral or slightly alkaline brine

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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
Spirochaetes exhibit

All of these
translatory motion
corkscrew-like rotatory movement
flexion and extension motility

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