Biology Movement of Molecules
- Created by: Elizabeth
- Created on: 23-03-13 17:27
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- Biology Movement of Molecules
- Osmosis
- Movement of water molecules.
- Along concentration gradient, through partially permeable membrane.
- Eg. in potatoes.
- Diffusion
- Any molecule.
- Along concentration gradient.
- Active Transport
- Against concentration gradient.
- Requires energy from respiration.
- Allows cells to absorb sugar and ions which pass through a cell membrane from very dilute solutions
- Eg. plant roots and small intestine.
- Osmosis
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