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Growth and Nutrition of Bacteria

Growth and Nutrition of Bacteria
In the exponential phase, the cells and cell mass

are constant
double at a constant rate
decreases
first increases then decreases

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Growth and Nutrition of Bacteria
Some organisms can use reduced inorganic compounds as electron donors and are termed as

lithotrophs
chemotrophs
photo-organotrophs
phototrophs

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Growth and Nutrition of Bacteria
What are the extrinsic factors for the microbial growth?

composition of gas phase
all of these
storage temperature
humidity

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

cell mass
cell count
cell activity
all of these

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Growth and Nutrition of Bacteria
Antimicrobial constituents for the microbial growth in foods are

extrinsic factor
none of these
both (a) and (b)
intrinsic factor

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

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

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