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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?

20-30°C
None of these
25-40°C
>40°C

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Growth and Nutrition of Bacteria
Which of the following has more tolerance for acidic pH (lower pH)?

None of these
Bacteria
Yeast and moulds
E. coli

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Growth and Nutrition of Bacteria
The term aerotolerant anaerobe refers to an organism that

doesn't use oxygen but can grow in the presence of oxygen
prefers to grow without oxygen
requires less oxygen than is present in air
is killed by oxygen

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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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Growth and Nutrition of Bacteria
The fragmentation occurs in

None of these
Streptomyces species
Bacillus subtilis
Nocardia species

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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 mass
cell activity

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