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Growth and Nutrition of Bacteria

Growth and Nutrition of Bacteria
Generation time of Escherichia coli is

20 hours
20 minutes
200 hours
20 days

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Growth and Nutrition of Bacteria
Autotrophic bacteria are those which

are highly susceptible to penicillin
produce a blue-green pigment
form a long chain glycocalyx
make their own food

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Growth and Nutrition of Bacteria
The reproduction by budding occur in

Bacillus subtilis
Rhodopseudomonas acidophila
Both (a) and (b)
Hyphomicrobium vulgare

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Growth and Nutrition of Bacteria
A spore differs from an actively replicating bacterium in that the spore

All of these
is metabolically inactive
is able to withstand more extreme conditions than the replicating cell
is produced during a process involving asymmetric division

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Growth and Nutrition of Bacteria
An organism has an optimal growth rate when the hydrogen ion concentration is very high. This organism is

acidophile
neutrophile
aerotolerant anaerobe
osmotolerant

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Growth and Nutrition of Bacteria
The average size of cells during the exponential phase of growth is

equal to the lag phase
lesser than the lag phase
greater than the lag phase
none of these

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