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Microbiology

Microbiology
The bacteria which produce(s) β-galactosidase is/are

all of these
Enterohacter
Serratia
Citrobacter

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Microbiology
Arrange the potencies of toxin in descending order of the following canned foods

corn> peas>string beans>spinach
corn> string bean>peas>spinach
corn> spinach> peas>string beans
peas>string beans>spinach> corn

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Microbiology
Blackening in pickles occurs due to

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

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

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

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Microbiology
The method of successful treatment of botulism prior to appearance of botulism symptoms involve administration of

analgesic
antibiotic
antipyretic
antitoxin

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

Serratia
Enterobacter
Cirobacter
Hafnia

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