EVERYDAY SCIENCE

Detailed explanation-1: -“Diffusion is the movement of molecules from a region of higher concentration to a region of lower concentration down the concentration gradient.”

Detailed explanation-2: -In passive transport, particles (e.g. ions or molecules) are transported along the concentration gradient. This means that the particles move from areas of high concentrations to areas of low concentrations. Because of the passive movement of particles no chemical energy is spent as it takes place.

Detailed explanation-3: -Diffusion is the movement of a substance down a concentration gradient. Diffusion can happen with or without passing through a semi-permeable membrane (cell plasma membrane is semi-permeable).

Detailed explanation-4: -Diffusion is a passive process which means it does not require energy. Small particles diffuse faster than large ones. Eg substances like oxygen, carbon dioxide and glucose move in and out of cells by diffusion.