Osmosis

Osmosis. The word that haunts GCSE biology. But what actually is it?

Osmosis

It's the movement of water from a high concentration to a low concentration through a partially permeable membrane. It happens in all living cells. It is used when plants are absorbing water through their roots. Inside the root cells before water has been taken in there should be a high concentration. So the process of Osmosis brings in water until there is a lower concentration than on the other side of the membrane. When it is used up the process begins again.