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Growth and Nutrition of Bacteria

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

storage temperature
humidity
all of these
composition of gas phase

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

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

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

None of these
>40°C
20-30°C
25-40°C

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Growth and Nutrition of Bacteria
Lag phase is also known as

generation time
transitional period
none of these
period of initial adjustment

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Growth and Nutrition of Bacteria
Which of the following procedures uses a photocell to measure absorbance of a culture to regulate the flow of culture media?

Hemostat
Petroff-Hausser chamber
Coulter Counter
Trubidostat

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Growth and Nutrition of Bacteria
The average size of cells during the exponential phase of growth is

greater than the lag phase
none of these
equal to the lag phase
lesser than the lag phase

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