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Microbiology

Microbiology
Soft pickles are made so by pectolytic enzymes mostly from

moulds
yeasts
bacteria
none of these

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Microbiology
Which of the following disease is caused by Yersinia enterocolitica in man?

Gastroenteritis
All of these
Septicaemia
Mesenteric lymphadenitis

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Microbiology
The reaction(s) that is/are usually positive in Escherichia coli, is/ are

Glucose fermentation
All of these
Methyl red reaction
Indole reaction

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

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

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Microbiology
Coliform bacteria on fermentation of carbohydrates yields

acetic acid
lactic acid
formic acid
all of these

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Microbiology
In Widal test, the significant titre for O agglutinins is generally

1:100 or more
1:2.00 or more
1:150 or more
1:50 or more

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