Question

Which ion(s) is/are higher in concentration inside the cell compared to outside?

1) potassium
2) chloride
3) calcium
4) sodium
5) More than one of the answers is correct.

Answer 1

Potassium ions (K+) are higher in concentration inside the cell compared to outside.

Step-by-step explanation:

The ion that is higher in concentration inside the cell compared to outside is potassium (K+).

In normal conditions, the concentration of potassium ions inside the cell is approximately 30 times higher than outside the cell. This concentration difference is maintained by sodium-potassium pumps in the cell membranes, which actively pump potassium into the cell and sodium out of the cell.