Question

How ions can move one cell to another direcly through?

Answer 1

Molecules and ions move spontaneously down their concentration gradient (i.e., from a region of higher to a region of lower concentration) by diffusion. Molecules and ions can be moved against their concentration gradient, but this process, called active transport, requires the expenditure of energy (usually from ATP).

Answer 2

Ions can move one cell to another through their charge. Their charge will help it to do so.
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