Which of the cell transport mechanisms requires energy?

Question

Quizplus · Accepted Answer

Active transport requires the use of energy to move molecules or ions against their concentration gradient, from an area of low concentration to an area of high concentration. This energy can come from ATP hydrolysis or from the electrochemical gradients established by other ion gradients. Passive transport, osmosis, and facilitated diffusion do not require energy since they move molecules or ions down their concentration gradients.

Which of the Cell Transport Mechanisms Requires Energy