Valve
Key Stage 3
Meaning
A valve is a mechanism that only allows a fluid to flow through it in one direction.
References
AQA
- Valve, pages 113, 115, 121, GCSE Biology; Student Book, Collins, AQA
- Valves, pages 54-58, GCSE Biology; Third Edition, Oxford University Press, AQA
Edexcel
- Valves, pages 265, 267, GCSE Biology, CGP, Edexcel
- Valves, pages 90, 91, GCSE Biology; The Revision Guide, CGP, Edexcel