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Growth and Nutrition of Bacteria

Growth and Nutrition of Bacteria
Bacteria of genus Nitrosomonas use __________ as their electron source.

succinate
light
H2S
ammonia

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Growth and Nutrition of Bacteria
The term aerotolerant anaerobe refers to an organism that

requires less oxygen than is present in air
doesn't use oxygen but can grow in the presence of oxygen
is killed by oxygen
prefers to grow without oxygen

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Growth and Nutrition of Bacteria
Autotrophic bacteria are those which

are highly susceptible to penicillin
make their own food
produce a blue-green pigment
form a long chain glycocalyx

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Growth and Nutrition of Bacteria
Implicit factors

both (a) and (b)
None of these
can be synergistic
depend on developing microflora

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Growth and Nutrition of Bacteria
Antimicrobial constituents for the microbial growth in foods are

extrinsic factor
both (a) and (b)
intrinsic factor
none of these

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Growth and Nutrition of Bacteria
The ability of Vibrio fischeri to produce bioluminescence chemicals only when a certain population density has been reached is an example of

Shelford's law of tolerance
Heisenberg's principle of uncertainty
Liebig's law of the minimum
quorum sensing

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