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Growth and Nutrition of Bacteria

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

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

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Growth and Nutrition of Bacteria
Some organisms can use reduced inorganic compounds as electron donors and are termed as

phototrophs
lithotrophs
chemotrophs
photo-organotrophs

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Growth and Nutrition of Bacteria
Generation time of Escherichia coli is

20 days
200 hours
20 minutes
20 hours

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Growth and Nutrition of Bacteria
A microbe, which grows at temperatures above 95° C is most likely to be

an archaean
a protozoan
none of these
a fungus

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

composition of gas phase
all of these
storage temperature
humidity

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Growth and Nutrition of Bacteria
What is the primary source of food for marine life?

Sea weed
Grass
Zooplankton
Phytoplankton

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