How does a cell membrane become polarized?

Answer 1

The cell membrane of a neuron is polarized to the electrical potential.

The polarized cell membrane of a neuron is what divides the inside from the outside of the cell; all chemicals flow through it. This electrical difference is known as the resting potential in a neuron.

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Answer 2

Oliver Antoine

When a membrane potential is established, a cell membrane becomes polarized. This is mainly because different ions, like calcium, chloride, and sodium, are distributed differently across the membrane. Ion channels and pumps, in particular the sodium-potassium pump, actively move potassium into the cell and sodium out of the cell, adding to the cell's internal negative charge.

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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.