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Microbiology

Microbiology
Prodigiosin (red pigment) is produced by members of genus

Serratia
Hafnia
Cirobacter
Enterobacter

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Microbiology
Shriveling in fermented pickles results from the physical effect of

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

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Microbiology
The technique(s), used for the assay of heat-labile enterotoxin produced by Escherichia coli, is/are

Enzyme-linked immunosorbent assay
Steroid production in Yl mouse adrenal cell culture
All of these
Morphological changes in Chinese hamster ovary

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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
addition of the mustard oil
agitation of the surface

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Microbiology
Which of the following is the commonest species of Salmonella for causing zoonotic disease?

S Indiana
S typhimurium
S enteritidis
S newport

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Microbiology
Which of the following property(ies) is/are seen in the members of family Enterobacteriaceae?

They are oxidase-negative
They reduce nitrates to nitrites
They ferment glucose
They are catalase-positive

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