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Microbiology

Microbiology
Primarily human pathogenic bacteria is/are ,

all of these
S paratyphi B
Salmonella typhi
S paratyphi A

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Microbiology
Heat-stable enterotoxin of Escherichia coli activates

none of these
both of the above
guanylate cyclase
adenylate cyclase

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Microbiology
Which of the following determine the pathogenicity of Yersinia pestis?

F1 envelope antigen
All of these
V and W antigens
Production of pigmented colonies on haemin containing media

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Microbiology
Coliform bacteria on fermentation of carbohydrates yields

formic acid
acetic acid
lactic acid
all of these

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Microbiology
Transmission of pneumonic plague from man to man is through

droplet infection
ingestion
all of these
inoculation

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Microbiology
The elimination of the scum of yeasts in the brine during the fermentation include

addition of the sorbic acid
all of these
agitation of the surface
addition of the mustard oil

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