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Microbiology

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

None of these
Escherichia
Neisseria
Pseudomonas

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Microbiology
Which of the following property(ies), shown by the organisms belong(s) to the family Enterobacteriaceae?

All of these
They are catalase-positive
They ferment glucose
They are oxidase-negative

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Microbiology
The favouring conditions for floaters is

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

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Microbiology
Group I C. botulinum strains generally includes in

all types of strains (proteolytic)C, D and F
all types of strains (proteolytic)A, B and F
all types of strains (non-proteolytic) E and F
None of these

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

Clostridia
Salmonella
Pseudomonas
None of these

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Microbiology
Slippery pickles occur due to

growth of encapsulated bacteria
broken scums of film yeasts on the surface of brine
both (a) and (b)
addition of high amount of salt

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