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Which of the following phase is known as the “Maximum population phase”?

(a) Lag phase

(b) Log phase

(c) Exponential phase

(d) Stationary phase

This question was posed to me during an online interview.

This intriguing question comes from Kinetics of Cell Substrate Uptake in Cell Culture topic in portion Homogenous Reactions of Bioprocess Engineering

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Correct option is (d) Stationary phase

For explanation I would say: The stationary phase in batch culture is that point where the growth rate has declined to zero. This phase is also known as the maximum population phase.

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