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Growth and Nutrition of Bacteria

Growth and Nutrition of Bacteria
Starvation proteins are produced by a culture during which of the following segments of the growth curve?

Stationary phase
Lag phase
Exponential phase
Death phase

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Growth and Nutrition of Bacteria
Implicit factors

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

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

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

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

microaerophile
aerobe
anaerobe
facultative

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Growth and Nutrition of Bacteria
All organisms require at least small amounts of carbondioxide, However, some can use CO2 as their sole source of carbon. Such organisms are termed as

photo-organotrophs
chemotrophs
autotrophs
phototrophs

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Growth and Nutrition of Bacteria
The combination of low levels of NaCl, NaNO3 (sodium nitrate), and slightly acid pH can prevent multiplication and toxin formation of

C. botulinum
Salmonella
S. aureus
all of these

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