Question

Facilitated diffusion and active transport differ with regard to the direction of solute movement relative to the concentration gradient.

Answer 1

Facilitated diffusion moves substances down their concentration gradient with the help of specific membrane receptors or channel proteins. Active transport requires energy to move substances against their concentration gradient through membrane proteins.

Step-by-step explanation:

Facilitated diffusion is the passive movement of substances down their concentration gradient with the help of specific membrane receptors or channel proteins. Examples include the movement of glucose and Na+ ions. On the other hand, active transport requires energy to move substances against their concentration gradient through membrane proteins. An example is the sodium-potassium pump, which uses ATP to pump sodium out of cells and potassium into cells.