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Microbiology

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

73 Rad
7.3 Mrad
73 Gy
173 Rad

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Microbiology
Group I C. botulinum strains generally includes in

all types of strains (non-proteolytic) E and F
all types of strains (proteolytic)A, B and F
all types of strains (proteolytic)C, D and F
None of these

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Microbiology
Gram-positive bacteria, responsible for food poisoning, is/are

all of these
Clostridia
Pseudomonas
Mycoplasmas

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Microbiology
An enrichment medium for the isolation of Shigella is

none of these
Alkaline peptone water
Selenite F broth
Terathionate broth

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Microbiology
The bacteria which produce(s) β-galactosidase is/are

Serratia
all of these
Enterohacter
Citrobacter

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Microbiology
The Bacillus cereus causes gasteroenteritis by the production of an exoenterotoxin which is released in food as a result of

cell permeation
cell autolysis
cell growth
cell damage

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