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Microbiology

Microbiology
Bacteria are

saprophytic
symbiotic
all of these
hyper parasitic

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Microbiology
Gassy spoilage of green olives is usually caused by

all of these
Clostridium spp
Bacillus spp
Enterobacter spp

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Microbiology
Yersinia enterocolitica and Y. pestis can be differentiated on the basis of which of the following tests?

All of these
Motility at 22°C
Decarboxylation of ornithine
Fermentation of sucrose and cellobiose

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Microbiology
The enzyme, which hydrolyses the murein is

none of these
tannase
perxoidase
lysozyme

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Microbiology
Which of the following determine the pathogenicity of Yersinia pestis?

V and W antigens
F1 envelope antigen
Production of pigmented colonies on haemin containing media
All of these

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Microbiology
Verotoxin 1 of Escherichia coli is similar to

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

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