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The ion most abundant in cells and most permeable to cell membrane is ____________

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The ion most abundant in cells and most permeable to cell membrane is ____________

(a) K^+

(b) Ca^2+

(c) Na^+

(d) H^+

I got this question in semester exam.

This is a very interesting question from Movement of Substances Across Cell Membranes in portion Cellular Membranes of Cell Biology

1 Answer

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Correct choice is (a) K^+

The explanation is: K^+ is the ion that is found in most abundance in cells. It also has the greatest permeability through cell membrane and as a result, it is pumped faster than any other ion through the cell membrane by active or passive transport.

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