BRAINCAKESpecialised Exchange Surfaces
Exchange Surfaces:
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Key terms in this lesson
- selectively permeable
- Describes a membrane that allows some substances to cross it but not others.
- diffusion
- The net movement of molecules or ions from a region of higher concentration to a region of lower concentration, down a concentration gradient.
More in Exchange Surfaces and Breathing
- The Need for Specialised Exchange Surfaces
- Surface Area to Volume Ratio
- The Human Gas Exchange System
- The Lungs
- Mechanism of Breathing
- Inspiration
- Expiration
- Alveoli
All 24 lessons in Exchange Surfaces and Breathing · All OCR AS-level Biology topics