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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

Answer»

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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