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Microbiology

Microbiology
Transmission of bubonic plague is by

all of these
rat flea
ingestion
inhalation

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

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

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Microbiology
Black kraut is caused by

the micro-organisms
None of these
the combined actions of plant enzymes and micro-organisms
the plant enzymes

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Microbiology
Soft pickles are made so by pectolytic enzymes mostly from

none of these
bacteria
moulds
yeasts

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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
73 Rad
7.3 Mrad
173 Rad

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Microbiology
Which of the following toxin causing botulism is less toxic to human beings?

Type C
Type A
Type B
None of these

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