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Growth and Nutrition of Bacteria

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

Exponential phase
Lag phase
Stationary phase
Death phase

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Growth and Nutrition of Bacteria
Microaerophilic bacteria are those which require

21 % oxygen for growth
oxygen for activation of enzymes
low levels of oxygen for growth (lesser than O2 present in atmosphere)
None of these

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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

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

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Growth and Nutrition of Bacteria
The growth is normally expressed as __________ in turbidimetric measurement

optical density
cfu/ml
cells per ml
mg N2 /ml

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Growth and Nutrition of Bacteria
An organism has an optimal growth rate when the hydrogen ion concentration is very high. This organism is

neutrophile
acidophile
aerotolerant anaerobe
osmotolerant

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Growth and Nutrition of Bacteria
The microorganisms that grow best in a low-oxygen environment is called a (n)

facultative
aerobe
anaerobe
microaerophile

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