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Microbiology

Microbiology
The bacteria which produce(s) β-galactosidase is/are

all of these
Enterohacter
Serratia
Citrobacter

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

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

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Microbiology
Which of the following is a food infection?

Botulism
Staphylococcal intoxication
None of these
Salmonellois

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Microbiology
Botulism is caused by the presence of toxin developed by

Clostridium tyrobutyricum
Clostridium botulinum
Clostridium sporogenes
none of these

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Microbiology
Prodigiosin (red pigment) is produced by members of genus

Serratia
Cirobacter
Hafnia
Enterobacter

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

Pseudomonas
None of these
Neisseria
Escherichia

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