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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
Exponential phase
Death phase
Lag phase

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Growth and Nutrition of Bacteria
The cell reproduction in bacteria may occur by

fragmentation
binary fission
all of these
budding

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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

chemotrophs
phototrophs
autotrophs
photo-organotrophs

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Growth and Nutrition of Bacteria
Organisms, using organic compounds as electron donors are called

organotrophs
lithotrophs
chemotrophs
phototrophs

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

humidity
composition of gas phase
all of these
storage temperature

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Growth and Nutrition of Bacteria
In the exponential phase, the cells and cell mass

double at a constant rate
decreases
are constant
first increases then decreases

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