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Microbiology

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

Citrobacter
all of these
Serratia
Enterohacter

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Microbiology
Which of the following genus belongs to family Spirochaetaceae?

All of these
Borrelia
Treponema
Spirochaeta

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Microbiology
Spirochaetes exhibit

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

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Microbiology
The milk streptococci produce acetoin that gets spontaneously oxidized yielding a flavorings agent (responsible for aroma of butter) that is

acetone
acetyl coA
diacetyl
butyric acid

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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 permeation
cell damage
cell autolysis
cell growth

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

antipyretic
analgesic
antitoxin
antibiotic

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