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Growth and Nutrition of Bacteria

Growth and Nutrition of Bacteria
Which of the following is the suitable temperature range for mesophiles?

25-40°C
20-30°C
>40°C
None of these

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Growth and Nutrition of Bacteria
A synergistic effect is observed when

microbial alteration of pH, aw, Eh favours the growth of another
one organism produces a growth factor utilized by another
one organism removes an inhibitory substance for another
All of these

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

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

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Growth and Nutrition of Bacteria
Bacteria and fungi multiply best

none of these
above 38°C
below 16°C
between 16-38°C

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Growth and Nutrition of Bacteria
The organism which obtain their energy from chemicals are designated as

organotrophs
prototrophs
chemotrophs
autotrophs

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

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

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