1. Movement in Cells & Revision
Biozone: p76 – 78
Heinemann:

2. Method 1: DIFFUSION
Used by unicellular organisms, and cells in your body. Basic Chemistry and Physics principles. Molecules possess kinetic energy, thus can move themselves ‘around’ – DISPERSAL.

3. Movement of a molecule from an area of high concentration to an area of low concentration until equilibrium is reached.
Most often seen in gases, but applies to liquids also, in solution.

5. Method 2: OSMOSIS
Used by unicellular organisms, and cells in your body. Basic Chemistry and Physics principles. More control than diffusion due to DIFFERENTIALLY PERMEABLE MEMBRANE. a.k.a. Selectively permeable membrane

6. Movement of water molecules from an area of low concentration to an area of high concentration through a differentially permeable membrane, until equilibrium is reached.

9. Description of solutions:
Hypotonic
Hypertonic

10. Method 3: ACTIVE TRANSPORT
Specialised process. Breaks expectations of chemistry and physics. Against the concentration gradient, thus from low concentration to high concentration. Requires ENERGY.

12. Revision: