The lungs of a mammal are an exchange surface for oxygen and carbon dioxide.
Explain how the lungs of a mammal are adapted for the efficient diffusion of oxygen into the blood.
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Markscheme
1.3 Transport in cells Questions
58 exam-style questions on AQA GCSE Biology 1.3 Transport in cells, covering 1.3.1 Diffusion, 1.3.2 Osmosis, and 1.3.3 Active transport. Each one has a worked solution and a mark scheme showing where the marks go.