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Microbiology

Microbiology
Which of the following is a gram-positive bacteria?

Streptococci
All of these
Lactobacillus
Staphylococci

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

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

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Microbiology
The most important bacterium developing acidity in both low and high salt brines is

L. plantarum
L. brevis
L. lactis
B. subtilis

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Microbiology
Arrange the potencies of toxin in descending order of the following canned foods

peas>string beans>spinach> corn
corn> peas>string beans>spinach
corn> spinach> peas>string beans
corn> string bean>peas>spinach

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Microbiology
Which of the following gram-negative bacteria is/are not aerobic?

None of these
Pseudomonas
Neisseria
Escherichia

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Microbiology
Sereny test is used for the detection of

enteropathogenic Escherichia coli
enterotoxigenic E. coli
enteroinvasive E. coli
verotoxigenic E. coli

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