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Microbiology

Microbiology
Gassy spoilage of green olives is usually caused by

Clostridium spp
all of these
Bacillus spp
Enterobacter spp

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Microbiology
Gram-negative bacterium is/are

All of these
Clostridia
Staphylococci
Escherichia

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Microbiology
Which of the following property(ies) is/are seen in the members of family Enterobacteriaceae?

They reduce nitrates to nitrites
They are catalase-positive
They are oxidase-negative
They ferment glucose

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Microbiology
The enzyme, which hydrolyses the murein is

lysozyme
tannase
perxoidase
none of these

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Microbiology
The application of Gamma rays destroys botulism toxin. The dose of gamma rays required for this purpose is

73 Gy
7.3 Mrad
173 Rad
73 Rad

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

plasma membrane
murein
teichoic acid
outer membrane

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