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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
Bacteria of genus Nitrosomonas use __________ as their electron source.

ammonia
light
succinate
H2S

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Growth and Nutrition of Bacteria
Postgates assay technique is useful in determining if a cell is viable even though it is

too small to see
incapable of cell division
a thermophile
an obligate aerobe

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Growth and Nutrition of Bacteria
The fragmentation occurs in

None of these
Streptomyces species
Bacillus subtilis
Nocardia species

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

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

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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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