Osmosis

1 Describe the role of water as a solvent in organisms with reference to digestion, excretion and transport

7 Describe osmosis as the net movement of water molecules from a region of higher water potential (dilute solution) to a region of lower water potential (concentrated solution), through a partially permeable membrane

2 State that water diffuses through partially permeable membranes by osmosis

8 Explain the effects on plant cells of immersing them in solutions of different concentrations by using the terms: turgid, turgor pressure, plasmolysis, flaccid

3 State that water moves into and out of cells by osmosis through the cell membrane

9 Explain the importance of water potential and osmosis in the uptake and loss of water by organisms