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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
humidity
storage temperature

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

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

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

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

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Growth and Nutrition of Bacteria
An organism has an optimal growth rate when the hydrogen ion concentration is very high. This organism is

aerotolerant anaerobe
osmotolerant
neutrophile
acidophile

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Growth and Nutrition of Bacteria
The fragmentation occurs in

Streptomyces species
None of these
Bacillus subtilis
Nocardia species

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Growth and Nutrition of Bacteria
The straightforward method of binary fission explains how bacteria

move
grow in nutrient agar
reproduce
evolve

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