Question

which of the following is an example of active transport? all of these movement of sodium from a high concentration to a low concentration movement of potassium with the concentration gradient movement of potassium from a low concentration to a high concentration

Explanation:

Active transport is the movement of molecules against their concentration gradient (from low to high concentration) and requires energy (usually ATP). The movement of sodium from high to low concentration and potassium with the concentration gradient are examples of passive transport (facilitated diffusion in the case of ions through channels). Only the movement of potassium from low to high concentration is active transport.

Answer:

Movement of potassium from a low concentration to a high concentration