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Microbiology

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

None of these
Pseudomonas
Escherichia
Neisseria

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Microbiology
Salmonellois is caused by the

neurotoxin of Salmonella spp
exoenterotoxin of Salmonella spp
endotoxin of Salmonella spp
enterotoxin of Salmonella spp

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Microbiology
Abnormal fermentation of cabbage may result in a cheese like odour caused by

propionic acid
all of these
caprioc acid and Valeric acid
butyric acid

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

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

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

All of these
Glucose fermentation
Methyl red reaction
Indole reaction

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Microbiology
Botulism is caused by the presence of toxin developed by

Clostridium botulinum
none of these
Clostridium sporogenes
Clostridium tyrobutyricum

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