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

Stationary phase
Exponential phase
Death phase
Lag phase

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Growth and Nutrition of Bacteria
The term obligate anaerobe refers to an organism that

uses oxygen when present or grows without oxygen when oxygen is absent
doesn't use oxygen but tolerates it
prefers to grow without oxygen
is killed by oxygen

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Growth and Nutrition of Bacteria
A microbe, which grows at temperatures above 95° C is most likely to be

none of these
a fungus
an archaean
a protozoan

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Growth and Nutrition of Bacteria
The organism which obtain their energy from chemicals are designated as

autotrophs
organotrophs
chemotrophs
prototrophs

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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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