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Microbiology

Microbiology
Primarily human pathogenic bacteria is/are ,

S paratyphi A
S paratyphi B
Salmonella typhi
all of these

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Microbiology
The most important bacterium developing acidity in both low and high salt brines is

B. subtilis
L. plantarum
L. lactis
L. brevis

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Microbiology
The reaction(s) that is/are usually positive in Escherichia coli, is/ are

Glucose fermentation
Indole reaction
Methyl red reaction
All of these

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Microbiology
Coliform bacteria on fermentation of carbohydrates yields

all of these
acetic acid
lactic acid
formic acid

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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

acetyl coA
diacetyl
butyric acid
acetone

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Microbiology
The gram-positive bacteria lack __________ structure/component?

murein
outer membrane
plasma membrane
teichoic acid

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