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Growth and Nutrition of Bacteria

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

Sea weed
Grass
Phytoplankton
Zooplankton

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Growth and Nutrition of Bacteria
The term aerotolerant anaerobe refers to an organism that

prefers to grow without oxygen
doesn't use oxygen but can grow in the presence of oxygen
is killed by oxygen
requires less oxygen than is present in air

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Growth and Nutrition of Bacteria
The term facultative anaerobe refers to an organism that

is killed by oxygen
requires less oxygen than is present in air
uses oxygen when present or grows without oxygen when absent
doesn't use oxygen but tolerates it

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Growth and Nutrition of Bacteria
Generation time of Escherichia coli is

200 hours
20 days
20 minutes
20 hours

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Growth and Nutrition of Bacteria
The generation time of a culture that produces two generations per hour is

greater than that produces three generations per hour
equal to that produces three generations per hour
lesser than that produces three generations per hour
None of these

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

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

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