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Microbiology

Microbiology
Example of the pathogenic bacteria is/are

L biflexa
All of these
Leptospira interrogans
Lparva

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Microbiology
Which of the following can readily kill Salmonellae?

Moist heat at 55°C for 10 min
Moist heat at 55°C for 30 min
Moist heat at 55°C for 20 min
Moist heat at 55°C for 1 hr

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

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Microbiology
Coliform bacteria on fermentation of carbohydrates yields

formic acid
all of these
acetic acid
lactic acid

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

Clostridia
Pseudomonas
Salmonella
None of these

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Microbiology
Which of the following(s) bacteria belong to the family Entero-bacteriaceae?

Yersinia
Shigella
All of these
Salmonella

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