Diffusion

The spreading out of particles of a substance in a solution or gas, resulting in a net movement from an area of higher concentration to an area of lower concentration.

The net movement of particles from an area of higher concentration to an area of lower concentration.

The net movement of particles from a region of higher concentration to a region of lower concentration, down a concentration gradient.

The net movement of particles from an area of higher concentration to an area of lower concentration.

The movement of particles from an area of higher concentration to an area of lower concentration.

The overall movement of particles from a region of higher concentration to a region of lower concentration.

The net movement of particles from a region of higher concentration to a region of lower concentration, down a concentration gradient.

The net movement of particles from a region of higher concentration to a region of lower concentration, without an energy supply from the cell.