Exchange of materials GCSE Biology AQA (higher)
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?- Created by: Some like it hot
- Created on: 13-05-12 11:20
Other questions in this quiz
2. What is "diffusion"?
- free movement of molecules down a concentration gradient.
- movement of molecules through a partially permeable membrane involving energy
- free movement of cells through a partially permeable membrane.
- free movement of water molecules through a partially permeable membrane.
3. Diffusion involves the movement of substances from ..........................
- a high concentration to a low concentration
- a low concentration to a high concentration
4. What is "active transport"?
- free movement of molecules through a partially permeable membrane
- free movement of water molecules through a partially permeable membrane.
- movement of molecules through a partially permeable membrane involving energy
- free movement of cells through a partially permeable membrane.
5. Osmosis involves the movement of water molecules from ..........................
- a high concentration to a low concentration
- a low concentration to a high concentration
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