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Microbiology

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

Citrobacter
all of these
Enterohacter
Serratia

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Microbiology
Which of the following genus belongs to family Spirochaetaceae?

Treponema
Borrelia
All of these
Spirochaeta

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

Pseudomonas
Escherichia
None of these
Neisseria

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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

diacetyl
acetyl coA
acetone
butyric acid

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Microbiology
Which of the following gram-positive bacteria causes pharyngitis (sore throat)?

Mycobacterium
Neisseria
Streptococcus
Staphylococcus

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Microbiology
The botulism intoxication occurs due to

all of these
mycotoxin
an enterotoxin
neurotoxin

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