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Growth and Nutrition of Bacteria

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

25-40°C
None of these
>40°C
20-30°C

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Growth and Nutrition of Bacteria
Pseudomonas pseudoflava can grow as

chemo-organotrophs
none of these
both (a) and (b)
chemo-lithotrophs

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Growth and Nutrition of Bacteria
Which of the following has more tolerance for acidic pH (lower pH)?

Yeast and moulds
Bacteria
None of these
E. coli

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Growth and Nutrition of Bacteria
Generation time of Escherichia coli is

20 days
200 hours
20 hours
20 minutes

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Growth and Nutrition of Bacteria
Starvation proteins are produced by a culture during which of the following segments of the growth curve?

Lag phase
Death phase
Stationary phase
Exponential phase

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

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

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