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Microbiology

Microbiology
Gram-negative bacterium is/are

All of these
Clostridia
Staphylococci
Escherichia

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Microbiology
Salmonellae can also be killed by

boiling
pasteurisation
chlorination
all of these

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

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

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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
Which of the following property(ies) is/are seen in the members of family Enterobacteriaceae?

They are catalase-positive
They reduce nitrates to nitrites
They are oxidase-negative
They ferment glucose

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Microbiology
Which of the following species/subspecies of Klebsiella produce indole?

K pneumoniae subspecies aerogenes
K oxytoca
K pneumoniae subspecies pneumoniae
K pneumoniae subspecies rhinoscleromatis

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