GCSE Biology Paper 1 (9-1 Exams)
Exchange Surfaces Substances Animals Blood Adapted Maximise Effectiveness
| Front |
How are exchange surfaces adapted to maximise effectiveness? |
| Back |
- Thin membrane so substances have a short diffusion pathway
- Large surface area so many substances diffuse at one
- Exchange surfaces in animals have lots of blood vessels to get stuff into and out of the blood quickly
- Gas exchange surfaces in animals are ventilated so air moves in and out
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GCSE Biology Paper 1 (9-1 Exams)