Diffusion
Diffusion is the movment of molecules from an area of high concentration into an area of a lower concentration. This can be shown by adding any coloured crystal that dissolves in water.
A solution is made up of two things, the solute and the solvent. The solute dissolves in the solvent. A concentrated solution has a high solute to solvent ratio and a dilute solution has a low solute to solvent ratio.
Osmosis
Osmosis is the movement of water molecules from an area of low water potential to an area of high water pontential across a partially permiable membrane. Plants use Osmosis to stay upright.
Active transport
Active transport is when a carrier protein moves a molecule from an area of low concentration to an area of higher concentration with the use of energy(ATP(Adenosine-Tri-Phosphates)).
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