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The population of microbes is maintained in which phase for long time using continuous culture system?

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The population of microbes is maintained in which phase for long time using continuous culture system?

(a) Lag

(b) Log

(c) Exponential

(d) Stationary

This question was posed to me during an internship interview.

I'm obligated to ask this question of Oxygen Uptake in Cell Cultures in chapter Mass Transfer of Bioprocess Engineering

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The correct option is (b) Log

Best explanation: The log phase is a period characterized by cell doubling. The number of new bacteria appearing per unit time is proportional to the present population. If growth is not limited, doubling will continue at a constant rate so both the number of cells and the rate of population increase doubles with each consecutive time period.

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