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Growth and Nutrition of Bacteria

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

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

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Growth and Nutrition of Bacteria
The ability of Vibrio fischeri to produce bioluminescence chemicals only when a certain population density has been reached is an example of

Heisenberg's principle of uncertainty
Liebig's law of the minimum
quorum sensing
Shelford's law of tolerance

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

25-40°C
20-30°C
>40°C
None of these

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Growth and Nutrition of Bacteria
The reproduction by budding occur in

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

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Growth and Nutrition of Bacteria
Lag phase is also known as

generation time
period of initial adjustment
transitional period
none of these

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

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

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