How does a cell membrane become polarized?

Answer 1

there is a flux of ions that are pump from a side of the membrane to the other making it more negative or positive depending on the ions used

The neural system's cells create ions concentration with ions pump to get polarized witch get open when a message passes from cell to cell. There are membrane pumps that, using energy, pass ions through the cell against the gradient of concentration. This is why, once the bridge in the cell are open, the ions travel back in order to get the electrical concentration to be neutrale again.

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Answer 2

Sebastian Alvarado

When an unequal distribution of ions is established across the surface of a cell membrane, usually by means of ion channels and pumps, an electrical potential difference is created across the membrane, leading to polarization.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.