Questions: In which direction does facilitated diffusion occur?

Facilitated diffusion occurs in the direction of the concentration gradient, from an area of higher concentration to an area of lower concentration. This process does not require energy because it relies on the natural kinetic movement of molecules. Facilitated diffusion involves the use of transport proteins, such as channel proteins or carrier proteins, to help specific molecules or ions cross the cell membrane. These proteins provide a pathway that allows substances to move more easily across the membrane, which is particularly important for molecules that are not able to diffuse freely through the lipid bilayer due to their size, charge, or polarity.