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Growth and Nutrition of Bacteria

Growth and Nutrition of Bacteria
Generation time of Escherichia coli is

20 minutes
20 hours
20 days
200 hours

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Growth and Nutrition of Bacteria
Microaerophilic bacteria are those which require

low levels of oxygen for growth (lesser than O2 present in atmosphere)
oxygen for activation of enzymes
21 % oxygen for growth
None of these

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Growth and Nutrition of Bacteria
Nutrient content and biological structures are considered as

processing factor
None of these
intrinsic factor for microbial growth
implicit factor for microbial growth

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

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

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Growth and Nutrition of Bacteria
The reproduction by budding occur in

Rhodopseudomonas acidophila
Hyphomicrobium vulgare
Bacillus subtilis
Both (a) and (b)

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

humidity
all of these
storage temperature
composition of gas phase

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