Diffusion: Movement of molecules from a high concentration gradient to a low concentration gradient. This is a passive process.
Osmosis: Movement of water from low water potential to high water potential. This is a passive process.
Facilitated Diffusion: Process where molecules that are too large to diffuse across the membrane are aided by channel proteins that provide them with a route to travel. From a high concentration gradient to a low concentration gradient, this is a passive process.
Active Transport: Transport of molecules against the concentration gradient. Molecules are forced through a channel/carrier protein with the aid of energy in the fom of ATP. This is an active process as it requires energy.
Endocytosis: Movement of material in bulk into the cell. In the form of a discrete package that fuses with the plasma membrane releasing matter into the cell.
Exocytosis: Movement of material in bulk out of the cell. A discrete package fuses with the plasma membrane releasing matter out of the cell.
Links:
GCSE Bitesize
Extension:
Revision PDF