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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
Which of the following is the suitable temperature range for mesophiles?

>40°C
None of these
20-30°C
25-40°C

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Growth and Nutrition of Bacteria
An organism that expends energy to grow in a habitat with a low water activity in order to maintain internal solute concentrations to retain water is

acidophile
alkalophile
aerotolerant anaerobe
osmotolerant

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Growth and Nutrition of Bacteria
Which of the following is used to grow bacterial cultures continuously?

Chemostat
Coulter Counter
Hemostat
Petroff-Hausser chamber

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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

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

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Growth and Nutrition of Bacteria
Postgates assay technique is useful in determining if a cell is viable even though it is

an obligate aerobe
too small to see
incapable of cell division
a thermophile

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