If K⁺ can exit the cell through leak channels,why don't they flow out until there are equal concentrations on both sides of the membrane? A)K⁺ can act as an enzymatic cofactor,and most K⁺ ions are bound to cellular enzymes. B)The leak channels allow a very slow leak that cannot keep pace with active import of K⁺ ions. C)Chelator molecules trap K⁺ on the inside of the membrane. D)The negative electrical potential inside the cell creates a force that holds the K⁺ ions in.

Question

Quizplus · Accepted Answer

The negative electrical potential inside the cell creates a force that holds the K⁺ ions in. This is known as electrostatic force, which opposes the concentration-based gradient that would otherwise cause the ions to flow out of the cell. Therefore, even though there may be a concentration gradient favoring the movement of K⁺ ions out of the cell through leak channels, the electrostatic force keeps most of the ions inside the cell.

If K+ Can Exit the Cell Through Leak Channels,why Don't

If K⁺ Can Exit the Cell Through Leak Channels,why Don't