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Microbiology

Microbiology
Gassy spoilage of green olives is usually caused by

Bacillus spp
Clostridium spp
all of these
Enterobacter spp

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Microbiology
Arrange the potencies of toxin in descending order of the following canned foods

corn> spinach> peas>string beans
peas>string beans>spinach> corn
corn> peas>string beans>spinach
corn> string bean>peas>spinach

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Microbiology
Heat-labile enterotoxin of Escherichia coli activates

guanylate cyclase
both (a) and (b)
none of these
adenylate cyclase

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

All of these
Glucose fermentation
Indole reaction
Methyl red reaction

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Microbiology
Soft pickles are made so by pectolytic enzymes mostly from

none of these
moulds
yeasts
bacteria

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Microbiology
Sereny test is used for the detection of

verotoxigenic E. coli
enterotoxigenic E. coli
enteropathogenic Escherichia coli
enteroinvasive E. coli

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MORE MCQ ON Microbiology

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