Simple Diffusion: Diffusion is defined as the net movement of a substance or molecules from a region of higher concentration to a region of lower concentration. It is very useful in the separation of a variety of gases. Diffusion is impossible when the concentration gradients of both regions are the same.
Simple Diffusion is the process in which solutes are passed through the concentration gradient in a solution across a semipermeable membrane. The assistance of membrane proteins is not required in this process of diffusion wherein substances move from higher concentration to lower. The process is conducted by the actions of hydrogen bonds which form between solutes and water molecules. Molecules of water move in to surround the solute molecules that maximizes hydrogen bonding.
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