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Growth and Nutrition of Bacteria

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

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

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

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

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Growth and Nutrition of Bacteria
Pseudomonas pseudoflava can grow as

chemo-organotrophs
both (a) and (b)
none of these
chemo-lithotrophs

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Growth and Nutrition of Bacteria
Which of the following is the suitable temperature range for mesophiles?

25-40°C
>40°C
None of these
20-30°C

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Growth and Nutrition of Bacteria
The microorganisms that grow best in a low-oxygen environment is called a (n)

aerobe
anaerobe
facultative
microaerophile

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

doesn't use oxygen but tolerates it
is killed by oxygen
uses oxygen when present or grows without oxygen when absent
requires less oxygen than is present in air

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