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Microbiology

Microbiology
Bacteria are

all of these
saprophytic
symbiotic
hyper parasitic

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Microbiology
In Widal test the significant titres for H agglutinins is

1:50 or more
1:100 ormore
1:400 or more
1:200 or more

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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 Gy
73 Rad
7.3 Mrad

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Microbiology
Floaters or bloaters may result from

all of these
hollow cucumbers
gas being formed by yeasts
hetero fermentative lactic acid bacteria

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Microbiology
The favouring conditions for floaters is

thick skin that does not allow gas to diffuse out
both (a) and (b)
none of these
high intial amounts of salt

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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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MORE MCQ ON Microbiology

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