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Microbiology

Microbiology
Soft pickles are made so by pectolytic enzymes mostly from

yeasts
moulds
bacteria
none of these

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Microbiology
Transmission of bubonic plague is by

inhalation
all of these
ingestion
rat flea

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

Enterohacter
Citrobacter
Serratia
all of these

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Microbiology
The Bacillus cereus causes gasteroenteritis by the production of an exoenterotoxin which is released in food as a result of

cell damage
cell autolysis
cell permeation
cell growth

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Microbiology
Which of the following gram-negative bacteria is/are not aerobic?

None of these
Escherichia
Pseudomonas
Neisseria

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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 reduce nitrates to nitrites
They ferment glucose

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