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Microbiology

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

outer membrane
plasma membrane
murein
teichoic acid

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Microbiology
Verotoxin 1 of Escherichia coli is similar to

cholera toxin
shiga toxin
heat-labile enterotoxin of E. coli
heat-stable enterotoxin of E. coli

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Microbiology
Thermus thermopiles is a

gram positive archebacteria
gram negative eubacteria
gram positive eubacteria
gram negative archebacteria

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Microbiology
Slimy or ropy kraut is caused by

None of these
encapsulated varieties of Lactobacillus plantarum
Lactobacillus lactis
encapsulated varieties of Lactobacillus brevis

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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
butyric acid
acetyl coA
diacetyl

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

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

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MORE MCQ ON Microbiology

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