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Growth and Nutrition of Bacteria

Growth and Nutrition of Bacteria
Generation time of Escherichia coli is

200 hours
20 hours
20 days
20 minutes

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Growth and Nutrition of Bacteria
Which of the following is the suitable temperature range for mesophiles?

None of these
25-40°C
>40°C
20-30°C

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Growth and Nutrition of Bacteria
The period between inoculation of bacteria in a culture medium and beginning of multiplication is known as

decline phase
log phase
stationary phase
lag phase

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Growth and Nutrition of Bacteria
The equation used to obtain bacterial population by binary fission is

log(N/No) = nlog 2
All of these
N = No2n
log N/No = (0.3010) n

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Growth and Nutrition of Bacteria
Autotrophic bacteria are those which

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

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

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

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