Question

which of the following statements is true with regard to this animation? the cell does not expend atp. potassium ions are transported down their concentration gradient. sodium ions are transported down their concentration gradient. both sodium and potassium ions are transported against their concentration gradients. the cell is not expending energy.

Explanation:

In the sodium - potassium pump, both sodium and potassium ions are transported against their concentration gradients. This is an active - transport process that requires the expenditure of ATP (energy). Sodium ions are pumped out of the cell and potassium ions are pumped into the cell against their respective concentration gradients.

Answer:

Both sodium and potassium ions are transported against their concentration gradients.