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Microbiology

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

Pseudomonas
Clostridia
all of these
Mycoplasmas

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Microbiology
Traveller's diarrhea is caused by

entero invasive E. coli (EIEC)
entero toxigenic E. coli (ETEC)
entero haemorrhagic E. coli (EHEC)
enteropathogenic Escherichia coli (EPEC)

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Microbiology
Which of the following media is selective for Salmonella?

Bile salt agar
All of these
Thiosulphate citrate bile salt agar
Wilson and Blair's brilliant-green bismuth sulphite agar medium

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Microbiology
In Widal test the significant titres for H agglutinins is

1:50 or more
1:200 or more
1:100 ormore
1:400 or more

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Microbiology
The technique(s), used for the assay of heat-labile enterotoxin produced by Escherichia coli, is/are

Steroid production in Yl mouse adrenal cell culture
All of these
Morphological changes in Chinese hamster ovary
Enzyme-linked immunosorbent assay

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Microbiology
Coliform bacteria on fermentation of carbohydrates yields

acetic acid
all of these
lactic acid
formic acid

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