Page 3- Concentration of Ions in and out and why

Question 1

Concentration of sodium ions

Answer 1

10x higher outside than inside the cell.

Due to limited number of sodium leakage channels which limits facilitated diffusion of sodium ions into the cell.

Question 2

Concentration of potassium ions

Answer 2

30x higher inside than outside the cell. Due to large number of potassium leakage channels which means more potassium ions are able to diffuse than sodium ions.

Question 3

Concentration of chloride ions

Answer 3

higher outside than inside the cell due to the membrane being highly permeable to chloride ions.