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Nerve impulses: OCR A‑Level Biology A questions

OCR A-Level Biology A past-paper questions on 5.1.3.3 Nerve impulses, 2016–2025, with mark schemes and examiner’s reports where available.

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1,983 questions

  1. Q18(a)(iii)

    June 2023 · Paper 1

    2 marks5.1.3.3 Nerve impulses
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  2. Q7

    November 2021 · Paper 1

    1 mark5.1.3.3 Nerve impulses
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  3. Q8

    November 2021 · Paper 1

    1 mark5.1.3.3 Nerve impulses
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  4. Q11

    November 2021 · Paper 1

    1 mark5.1.3.3 Nerve impulses
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  5. Q21(a)(i)

    June 2018 · Paper 1

    4 marks5.1.3.3 Nerve impulses
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  6. Q21(b)

    June 2018 · Paper 1

    1 mark5.1.3.3 Nerve impulses
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  7. Q5(a)(ii)

    June 2017 · Paper 3

    2 marks5.1.3.3 Nerve impulses
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All 7 questions on Nerve impulses, as a list
  1. June 2023, Paper 1, Q18(a)(iii) (2 marks): Complete the sentences about the action potential. The action potential involves rapid opening of voltage-gated sodium ion channels. This is an example of feedb
  2. November 2021, Paper 1, Q7 (1 mark): Which row in the table correctly describes the events occurring during the action potential? Na+/K+-pump is Voltage-gated Na+ Voltage-gated K+ Position on graph
  3. November 2021, Paper 1, Q8 (1 mark): Which of the statements about the graph is correct? A Depolarisation is occurring at 4 and hyperpolarisation is occurring at 6. B Depolarisation is occurring at
  4. November 2021, Paper 1, Q11 (1 mark): Which of the following statements about nervous transmission is not correct? A Breakdown of the myelin sheath can lead to uncoordinated movement. B Saltatory co
  5. June 2018, Paper 1, Q21(a)(i) (4 marks): The following information has been discovered about the effects of TTX on nerve cells: • TTX binds to the external surface of the voltage-gated sodium ion chann
  6. June 2018, Paper 1, Q21(b) (1 mark): Molluscs such as H. lunulata have unmyelinated neurones. Saltatory conduction cannot occur in these neurones. Why is transmission of action potentials along the
  7. June 2017, Paper 3, Q5(a)(ii) (2 marks): Fig. 5 on the insert shows three neurones of different sizes from a person with MS. One of the neurones has been affected by MS. MS causes changes to neurones,

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