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Growth and Nutrition of Bacteria

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

None of these
Bacteria
Yeast and moulds
E. coli

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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?

Stationary phase
Exponential phase
Lag phase
Death phase

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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

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

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Growth and Nutrition of Bacteria
Generation time of Escherichia coli is

20 hours
200 hours
20 minutes
20 days

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Growth and Nutrition of Bacteria
Bacteria and fungi multiply best

above 38°C
below 16°C
none of these
between 16-38°C

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Growth and Nutrition of Bacteria
An organism is completely dependent on atmospheric O2 for growth. This organism is

osmotolerant
facultative anaerobe
acidophile
obligate aerobe

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