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Microbiology

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

Escherichia
Pseudomonas
None of these
Neisseria

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Microbiology
The bacteria that is negative for fermentation of mannitol is

S dysenteriae
S flexneri
S boydii
S sonnei

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Microbiology
Bacteria are

symbiotic
hyper parasitic
saprophytic
all of these

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Microbiology
The Bacillus cereus causes gasteroenteritis by the production of an exoenterotoxin which is released in food as a result of

cell growth
cell permeation
cell damage
cell autolysis

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Microbiology
Blackening in pickles occurs due to

growth of Pencillium
both (a) and (b)
the formation of hydrogen sulfide by bacteria
None of these

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Microbiology
Salmonellae can also be killed by

pasteurisation
boiling
chlorination
all of these

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MORE MCQ ON Microbiology

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