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Growth and Nutrition of Bacteria

Growth and Nutrition of Bacteria
Generation time of Escherichia coli is

20 minutes
20 hours
20 days
200 hours

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

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Growth and Nutrition of Bacteria
Bacteria of genus Nitrosomonas use __________ as their electron source.

ammonia
light
succinate
H2S

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Growth and Nutrition of Bacteria
What is the primary source of food for marine life?

Sea weed
Phytoplankton
Grass
Zooplankton

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Growth and Nutrition of Bacteria
The cell reproduction in bacteria may occur by

fragmentation
budding
all of these
binary fission

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Growth and Nutrition of Bacteria
The combination of low levels of NaCl, NaNO3 (sodium nitrate), and slightly acid pH can prevent multiplication and toxin formation of

S. aureus
Salmonella
C. botulinum
all of these

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