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Diffusion and gas exchange surfaces

Diffusion and gas exchange surfaces

A gas exchange surface is a boundary across which oxygen and carbon dioxide diffuse between an organism and its environment. Gas exchange moves oxygen into an organism and carbon dioxide out, mainly by diffusion.

Gas exchange Lesson

  1. A Level
  2. /Biology
  3. /Gas exchange

Step-by-step lessons covering AQA A Level Biology Gas exchange for A Level Biology. Each lesson breaks down Gas exchange, then works through exam-style questions in Paper 1, Paper 2 and Paper 3 format. Build a strong foundation in cell biology and biochemistry early on, since later topics on genetics, ecology and physiology all draw on these core concepts.