BioNinja

Osmosis is a special form of simple diffusion that involves the movement of free water molecules

• While water is a polar molecule, it is small enough to move between phospholipids in the bilayer
  

• As a polar molecule, it is attracted to, and will associate with, other polar molecules or charged ions
  

• Water will therefore move towards the solution containing a higher concentration of ions or polar molecules
  

Water is a solvent capable of dissolving any polar or charged molecule (solute) to create a solution

Osmosis