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Growth and Nutrition of Bacteria

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

composition of gas phase
storage temperature
humidity
all of these

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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
Death phase
Stationary phase

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

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

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

doesn't use oxygen but tolerates it
is killed by oxygen
uses oxygen when present or grows without oxygen when oxygen is absent
prefers to grow without oxygen

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

cell activity
cell count
all of these
cell mass

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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
osmotolerant
aerotolerant anaerobe

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