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Growth and Nutrition of Bacteria

Growth and Nutrition of Bacteria
During exponential growth, the growth rate is

both (a) and (b)
reciprocal of generation time
none of these
number of generations per unit time

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

facultative
anaerobe
microaerophile
aerobe

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Growth and Nutrition of Bacteria
Generation time of Escherichia coli is

20 days
200 hours
20 hours
20 minutes

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Growth and Nutrition of Bacteria
The generation time of a culture that produces two generations per hour is

None of these
lesser than that produces three generations per hour
greater than that produces three generations per hour
equal to that produces three generations per hour

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

Lag phase
Exponential phase
Death phase
Stationary phase

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Growth and Nutrition of Bacteria
Exponential phase of growth curve of bacteria is of limited duration because of

exhaustion of nutrients
accumulation of toxic metabolites
rise in cell density
all of these

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