A molecule moves down its concentration gradient using a transport protein in the plasma membrane. This is an example of facilitated diffusion.
The movement of molecules along a concentration gradient is known as diffusion. It is a significant process that all living things go through. Diffusion facilitates the flow of materials into and out of cells. Until the concentration is the same everywhere, the molecules travel from a location of higher concentration to a region of lower concentration.
Diffusion occurs in gases and liquids because random molecular movement is possible.
During the process of diffusion movements of the particles takes place from a higher concentration to a lower concentration until there is uniform concentration on both sides of the movements.
A transport protein in the plasma membrane is used by a molecule to move down its concentration gradient. This is an illustration of facilitated diffusion.
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