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Growth and Nutrition of Bacteria

Growth and Nutrition of Bacteria
Generation time of Escherichia coli is

20 hours
20 minutes
20 days
200 hours

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

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

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Growth and Nutrition of Bacteria
Exponential phase of growth curve of bacteria is of limited duration because of

exhaustion of nutrients
all of these
rise in cell density
accumulation of toxic metabolites

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Growth and Nutrition of Bacteria
The total biomass of an organism will be determined by the nutrient present in the lowest concentration relative to the organism's requirements is a statement of

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

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Growth and Nutrition of Bacteria
Quantitative measurement of bacterial growth can be carried out by measuring

cell count
all of these
cell activity
cell mass

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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
quorum sensing
Liebig's law of the minimum
Shelford's law of tolerance

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