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Growth and Nutrition of Bacteria

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

composition of gas phase
humidity
storage temperature
all of these

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Growth and Nutrition of Bacteria
An organism that expends energy to grow in a habitat with a low water activity in order to maintain internal solute concentrations to retain water is

acidophile
osmotolerant
alkalophile
aerotolerant anaerobe

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Growth and Nutrition of Bacteria
The fragmentation occurs in

Streptomyces species
Bacillus subtilis
Nocardia species
None of these

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Growth and Nutrition of Bacteria
The organism which grows best above 45°C are called

mesosphilic
psychrophilic
any of these
thermophilic

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Growth and Nutrition of Bacteria
Bacteria of genus Nitrosomonas use __________ as their electron source.

succinate
H2S
ammonia
light

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

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

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