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Exchange surfaces and diffusion: Edexcel GCSE Combined Science questions

Every Edexcel GCSE Combined Science exam question on Exchange surfaces and diffusion (specification points 8.1–8.3), 2018–2025, with its mark scheme and examiner’s report.

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2,937 questions

  1. Q4(a)

    June 2024 · Biology Paper 2 Foundation

    1 markExchange surfaces and diffusion
    The whole paper ↗
    Your answer

  2. Q4(b)

    June 2024 · Biology Paper 2 Foundation

    1 markExchange surfaces and diffusion
    The whole paper ↗

  3. Q4(a)(i)

    June 2023 · Biology Paper 2 Higher

    1 markExchange surfaces and diffusion
    The whole paper ↗

  4. Q4(a)(ii)

    June 2023 · Biology Paper 2 Higher

    1 markExchange surfaces and diffusion
    The whole paper ↗

  5. Q4(a)(iii)

    June 2023 · Biology Paper 2 Higher

    3 marksExchange surfaces and diffusion
    The whole paper ↗

  6. Q4(a)(iv)

    June 2023 · Biology Paper 2 Higher

    3 marksExchange surfaces and diffusion
    The whole paper ↗

  7. Q4(b)

    June 2023 · Biology Paper 2 Higher

    2 marksExchange surfaces and diffusion
    The whole paper ↗

  8. Q6(c)

    November 2021 · Biology Paper 2 Foundation

    6 marksExchange surfaces and diffusion
    The whole paper ↗

  9. Q2(a)

    June 2018 · Biology Paper 2 Foundation

    2 marksExchange surfaces and diffusion
    The whole paper ↗
All 9 questions on Exchange surfaces and diffusion, as a list
  1. June 2024, Biology Paper 2 Foundation, Q4(a) (1 mark): Which process moves carbon dioxide from the blood into the alveolus? (1) A diffusion B osmosis C active transport D transpiration
  2. June 2024, Biology Paper 2 Foundation, Q4(b) (1 mark): State one adaptation of an alveolus that increases the rate of gas exchange. (1)
  3. June 2023, Biology Paper 2 Higher, Q4(a)(i) (1 mark): Name the gas used in respiration that moves from the alveolus into the capillary. (1)
  4. June 2023, Biology Paper 2 Higher, Q4(a)(ii) (1 mark): Name the gas produced by respiration that moves from the capillary into the alveolus. (1)
  5. June 2023, Biology Paper 2 Higher, Q4(a)(iii) (3 marks): The capillary wall is only one cell thick. Explain how gases move from the alveolus to the capillary. (3)
  6. June 2023, Biology Paper 2 Higher, Q4(a)(iv) (3 marks): Explain the advantages of red blood cells passing one at a time through this narrow capillary. (3)
  7. June 2023, Biology Paper 2 Higher, Q4(b) (2 marks): The average number of alveoli in each human lung is 280 million. The surface area of 1 million alveoli is 0.25 m2. Calculate the total surface area of a human l
  8. November 2021, Biology Paper 2 Foundation, Q6(c) (6 marks): Explain how alveoli in human lungs are adapted for gas exchange. Include the names of the gases that are being exchanged. (6)
  9. June 2018, Biology Paper 2 Foundation, Q2(a) (2 marks): Figure 2 shows alveoli from a healthy lung. Figure 2 Smoking can cause a condition called emphysema. Figure 3 shows alveoli from a person with emphysema. Figure

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