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cell division

tejaswini
in Evolution, Morphology and Exobiology

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:confused: when the cells divide by binary fission they expand , but why does this take place ? is there a chemical mechanism behind this.

I believe this has to do with osmosis. During cell cycles the sodium/potassium pumps/channels are more subject to reversal. The helps reset the cation ratio of Na/K quickly at the sodium pumps resulting in a faster firing rate at the sodium pumps. It also causes more cations to be in the cell at any given time. This pulls water into the cell via osmosis.

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