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Microbiology

Microbiology
Bacteria are

saprophytic
symbiotic
hyper parasitic
all of these

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

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

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Microbiology
Which of the following(s) bacteria belong to the family Entero-bacteriaceae?

Shigella
All of these
Salmonella
Yersinia

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Microbiology
The botulism intoxication occurs due to

an enterotoxin
mycotoxin
neurotoxin
all of these

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Microbiology
The growth of black-pigmented Bacillus nigrificans, a causative agent of black pickle is favoured by

All of these
low level of available nitrogen
neutral or slightly alkaline brine
presence of carbohydrate like glucose

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Microbiology
Gram-positive bacteria, responsible for food poisoning, is/are

Clostridia
Pseudomonas
Mycoplasmas
all of these

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MORE MCQ ON Microbiology

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