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Control of heart rate in mammals: Edexcel A‑Level Biology B questions

Every Edexcel A-Level Biology B exam question on 9.8 Control of heart rate in mammals, 2016–2025, with its mark scheme and examiner’s report.

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1,826 questions

  1. Q3(b)(ii)

    June 2025 · Paper 2

    4 marks9.8 Control of heart rate in mammals
    The whole paper ↗
    June 2025 Paper 2, question 3(b)(ii): The anti‑anxiety drug has a similar shape to noradrenaline. Analyse the data to comment on the results of this investigation. (4)

  2. Q8(b)(iii)

    June 2023 · Paper 2

    3 marks9.8 Control of heart rate in mammals
    The whole paper ↗
    June 2023 Paper 2, question 8(b)(iii): Bradycardia is a heart condition that results in a heart rate that is slower than normal. Atropine is a drug that can be used to treat some forms of bradycardia

  3. Q8(b)(iv)

    June 2023 · Paper 2

    4 marks9.8 Control of heart rate in mammals
    The whole paper ↗
    June 2023 Paper 2, question 8(b)(iv): Describe how exercise leads to the stimulation of the cardiac centre in the medulla oblongata. (4)

  4. Q4(a)(ii)

    June 2022 · Paper 2

    1 mark9.8 Control of heart rate in mammals
    The whole paper ↗
    June 2022 Paper 2, question 4(a)(ii): Which one of the following would lead to an increase in heart rate? (1) A release of acetylcholine by the sympathetic nervous system B release of acetylcholine

  5. Q6(a)(ii)

    November 2021 · Paper 2

    1 mark9.8 Control of heart rate in mammals
    The whole paper ↗
    November 2021 Paper 2, question 6(a)(ii): Which row is correct for acetylcholine? (1) Type of neurone that releases Effect of acetylcholine acetylcholine parasympathetic neurone increases heart rate A p

  6. Q2(b)(ii)

    October 2020 · Paper 2

    3 marks9.8 Control of heart rate in mammals
    The whole paper ↗
    October 2020 Paper 2, question 2(b)(ii): Explain why a person poisoned with DFP has a slower heart rate. (3)

  7. Q9(c)(i)

    June 2019 · Paper 3

    4 marks9.8 Control of heart rate in mammals
    The whole paper ↗
    June 2019 Paper 3, question 9(c)(i): Analyse the data to explain how the pH of blood plasma affects heart rate. (4)

  8. Q9(c)(ii)

    June 2019 · Paper 3

    4 marks9.8 Control of heart rate in mammals
    The whole paper ↗
    June 2019 Paper 3, question 9(c)(ii): There were errors in the design of this investigation that reduced the validity of the data. Explain how this investigation should have been designed to ensure

  9. Q5(c)

    June 2018 · Paper 2

    3 marks9.8 Control of heart rate in mammals
    The whole paper ↗
    June 2018 Paper 2, question 5(c): The diagram shows two chemicals that affect the human heart rate. OH NH2 O N H OH HO OH Noradrenaline Beta blocker Beta blockers are drugs used to regulate the

  10. Q2(c)(ii)

    June 2017 · Paper 2

    4 marks9.8 Control of heart rate in mammals
    The whole paper ↗
    June 2017 Paper 2, question 2(c)(ii): Describe how exercise results in an increased heart rate. (4)
All 10 questions on Control of heart rate in mammals, as a list
  1. June 2025, Paper 2, Q3(b)(ii) (4 marks): The anti‑anxiety drug has a similar shape to noradrenaline. Analyse the data to comment on the results of this investigation. (4)
  2. June 2023, Paper 2, Q8(b)(iii) (3 marks): Bradycardia is a heart condition that results in a heart rate that is slower than normal. Atropine is a drug that can be used to treat some forms of bradycardia
  3. June 2023, Paper 2, Q8(b)(iv) (4 marks): Describe how exercise leads to the stimulation of the cardiac centre in the medulla oblongata. (4)
  4. June 2022, Paper 2, Q4(a)(ii) (1 mark): Which one of the following would lead to an increase in heart rate? (1) A release of acetylcholine by the sympathetic nervous system B release of acetylcholine
  5. November 2021, Paper 2, Q6(a)(ii) (1 mark): Which row is correct for acetylcholine? (1) Type of neurone that releases Effect of acetylcholine acetylcholine parasympathetic neurone increases heart rate A p
  6. October 2020, Paper 2, Q2(b)(ii) (3 marks): Explain why a person poisoned with DFP has a slower heart rate. (3)
  7. June 2019, Paper 3, Q9(c)(i) (4 marks): Analyse the data to explain how the pH of blood plasma affects heart rate. (4)
  8. June 2019, Paper 3, Q9(c)(ii) (4 marks): There were errors in the design of this investigation that reduced the validity of the data. Explain how this investigation should have been designed to ensure
  9. June 2018, Paper 2, Q5(c) (3 marks): The diagram shows two chemicals that affect the human heart rate. OH NH2 O N H OH HO OH Noradrenaline Beta blocker Beta blockers are drugs used to regulate the
  10. June 2017, Paper 2, Q2(c)(ii) (4 marks): Describe how exercise results in an increased heart rate. (4)

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