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GCSE Biology Paper 1 (9-1 Exams)

Surface Alveoli Specialised Maximise Diffusion Big Area Lots

Alveoli are specialized for diffusion, featuring a large surface area, a moist lining, thin walls, and a rich blood supply.

Alveoli are specialized for diffusion with a large surface area, moist lining, thin walls, and a good blood supply.

Front How are alveoli specialised to maximise diffusion?
Back
  • A big surface area (lots of substances (CO2 and O2) can diffuse across the surface at once)
  • A moist lining for dissolving gases
  • Thin walls
  • A good blood supply

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