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Growth and Nutrition of Bacteria

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

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

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Growth and Nutrition of Bacteria
The growth is normally expressed as __________ in turbidimetric measurement

mg N2 /ml
cfu/ml
cells per ml
optical density

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Growth and Nutrition of Bacteria
Exponential phase of growth curve of bacteria is of limited duration because of

all of these
accumulation of toxic metabolites
exhaustion of nutrients
rise in cell density

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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?

Death phase
Lag phase
Stationary phase
Exponential phase

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

chemotrophs
autotrophs
prototrophs
organotrophs

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Growth and Nutrition of Bacteria
Lag phase is also known as

generation time
none of these
transitional period
period of initial adjustment

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