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Microbiology

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

Citrobacter
Enterohacter
Serratia
all of these

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Microbiology
Staphylococcal intoxication is caused by the toxin m the food from

S. thermophillus
Staphylococcus aureus
none of these
S. cerevisiae

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Microbiology
Traveller's diarrhea is caused by

entero invasive E. coli (EIEC)
entero toxigenic E. coli (ETEC)
entero haemorrhagic E. coli (EHEC)
enteropathogenic Escherichia coli (EPEC)

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Microbiology
The application of Gamma rays destroys botulism toxin. The dose of gamma rays required for this purpose is

173 Rad
73 Rad
73 Gy
7.3 Mrad

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Microbiology
Botulism is caused by the presence of toxin developed by

Clostridium sporogenes
Clostridium tyrobutyricum
Clostridium botulinum
none of these

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Microbiology
Which of the following serotypes of Salmonella does not produce H2S?

Both (a) and (b)
None of these
S paratyphi A
S choleraesuis

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