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Growth and Nutrition of Bacteria

Growth and Nutrition of Bacteria
What are the extrinsic factors for the microbial growth?

composition of gas phase
all of these
storage temperature
humidity

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Growth and Nutrition of Bacteria
The equation used to obtain bacterial population by binary fission is

log N/No = (0.3010) n
All of these
N = No2n
log(N/No) = nlog 2

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Growth and Nutrition of Bacteria
The period between inoculation of bacteria in a culture medium and beginning of multiplication is known as

lag phase
stationary phase
decline phase
log phase

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Growth and Nutrition of Bacteria
Autotrophic bacteria are those which

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

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

H2S
light
succinate
ammonia

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Growth and Nutrition of Bacteria
Implicit factors

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

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