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Microbiology

Microbiology
Gassy spoilage of green olives is usually caused by

all of these
Bacillus spp
Enterobacter spp
Clostridium spp

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Microbiology
Which of the following serotypes of Salmonella does not produce H2S?

S paratyphi A
S choleraesuis
None of these
Both (a) and (b)

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

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

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Microbiology
Gram-positive bacteria, responsible for food poisoning, is/are

Mycoplasmas
Pseudomonas
all of these
Clostridia

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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
butyric acid
diacetyl
acetone

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Microbiology
Botulism is caused by the presence of toxin developed by

none of these
Clostridium tyrobutyricum
Clostridium sporogenes
Clostridium botulinum

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