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Communication and homeostasis: OCR A‑Level Biology A questions

Every OCR A-Level Biology A exam question on 5.1.1 Communication and homeostasis, 2016–2025, with its mark scheme and examiner’s report.

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1,984 questions

  1. Q12

    June 2023 · Paper 1

    1 mark5.1.1 Communication and homeostasis
    The whole paper ↗
    June 2023 Paper 1, question 12: Which of the statements about communication systems is correct? A Cell signalling acts only over short distances. B Communication systems are required to coordi

  2. Q20(a)(i)

    June 2023 · Paper 1

    1 mark5.1.1 Communication and homeostasis
    The whole paper ↗
    June 2023 Paper 1, question 20(a)(i): Define the term endotherm. [1]

  3. Q20(a)(ii)

    June 2023 · Paper 1

    2 marks5.1.1 Communication and homeostasis
    The whole paper ↗
    June 2023 Paper 1, question 20(a)(ii): Suggest one advantage and one disadvantage that ectotherms have compared to endotherms. Advantage Disadvantage [2]

  4. Q20(b)

    June 2023 · Paper 1

    6 marks5.1.1 Communication and homeostasis
    The whole paper ↗
    June 2023 Paper 1, question 20(b): (b)* During a class discussion, one student stated: ‘Ectotherms cannot control their body temperature.’ Another student stated: ‘Ectotherms control their body t

  5. Q20(c)(i)

    June 2023 · Paper 1

    2 marks5.1.1 Communication and homeostasis
    The whole paper ↗
    June 2023 Paper 1, question 20(c)(i): Suggest the consequences of an increase in the thermogenic set point. [2]

  6. Q10

    June 2022 · Paper 1

    1 mark5.1.1 Communication and homeostasis
    The whole paper ↗
    June 2022 Paper 1, question 10: Which process is an example of cell signalling? A Binding of a virus to a receptor on the cell surface membrane of an epithelial cell in the upper respiratory t

  7. Q11

    June 2022 · Paper 1

    1 mark5.1.1 Communication and homeostasis
    The whole paper ↗
    June 2022 Paper 1, question 11: Which statement describes an aspect of homeostasis? A Effectors detect a change and cause release of hormones that bind to target cells. B Homeostasis maintains

  8. Q3

    June 2019 · Paper 1

    1 mark5.1.1 Communication and homeostasis
    The whole paper ↗
    June 2019 Paper 1, question 3: Which of the following, A to D, is not an example of cell signalling? A The hormone insulin being removed from the blood by the glomerulus. B The neurotransmitt

  9. Q2(a)(i)

    June 2019 · Paper 3

    2 marks5.1.1 Communication and homeostasis
    The whole paper ↗
    June 2019 Paper 3, question 2(a)(i): Some features of thermoregulation in naked mole rats are listed below: • They live in complex underground tunnel systems, which tend to have a stable temperatur

  10. Q2(a)(ii)

    June 2019 · Paper 3

    4 marks5.1.1 Communication and homeostasis
    The whole paper ↗
    June 2019 Paper 3, question 2(a)(ii): In humans, when core body temperature falls below 35 °C, positive feedback causes this decrease in core body temperature to continue. This process is known as h

  11. Q2(a)(iii)

    June 2019 · Paper 3

    2 marks5.1.1 Communication and homeostasis
    The whole paper ↗
    June 2019 Paper 3, question 2(a)(iii): Mammals, including naked mole rats, have temperature receptors that play a role in thermoregulation. The table below lists four statements about mammalian tempe

  12. Q1

    June 2017 · Paper 1

    1 mark5.1.1 Communication and homeostasis
    The whole paper ↗
    June 2017 Paper 1, question 1: Which of the options, A to D, correctly describes how an endotherm would respond to an increase in temperature? A dilation of arterioles near the surface of the

  13. Q16(a)(i)

    June 2017 · Paper 1

    1 mark5.1.1 Communication and homeostasis
    The whole paper ↗
    June 2017 Paper 1, question 16(a)(i): Using the information provided, explain why many moths and bumblebees are described as endothermic. [1]

  14. Q16(a)(ii)

    June 2017 · Paper 1

    2 marks5.1.1 Communication and homeostasis
    The whole paper ↗
    June 2017 Paper 1, question 16(a)(ii): It is more difficult for moths and bumblebees to maintain their body temperature than for mammals and birds to maintain their body temperature. Explain why. [2]
All 14 questions on Communication and homeostasis, as a list
  1. June 2023, Paper 1, Q12 (1 mark): Which of the statements about communication systems is correct? A Cell signalling acts only over short distances. B Communication systems are required to coordi
  2. June 2023, Paper 1, Q20(a)(i) (1 mark): Define the term endotherm. [1]
  3. June 2023, Paper 1, Q20(a)(ii) (2 marks): Suggest one advantage and one disadvantage that ectotherms have compared to endotherms. Advantage Disadvantage [2]
  4. June 2023, Paper 1, Q20(b) (6 marks): (b)* During a class discussion, one student stated: ‘Ectotherms cannot control their body temperature.’ Another student stated: ‘Ectotherms control their body t
  5. June 2023, Paper 1, Q20(c)(i) (2 marks): Suggest the consequences of an increase in the thermogenic set point. [2]
  6. June 2022, Paper 1, Q10 (1 mark): Which process is an example of cell signalling? A Binding of a virus to a receptor on the cell surface membrane of an epithelial cell in the upper respiratory t
  7. June 2022, Paper 1, Q11 (1 mark): Which statement describes an aspect of homeostasis? A Effectors detect a change and cause release of hormones that bind to target cells. B Homeostasis maintains
  8. June 2019, Paper 1, Q3 (1 mark): Which of the following, A to D, is not an example of cell signalling? A The hormone insulin being removed from the blood by the glomerulus. B The neurotransmitt
  9. June 2019, Paper 3, Q2(a)(i) (2 marks): Some features of thermoregulation in naked mole rats are listed below: • They live in complex underground tunnel systems, which tend to have a stable temperatur
  10. June 2019, Paper 3, Q2(a)(ii) (4 marks): In humans, when core body temperature falls below 35 °C, positive feedback causes this decrease in core body temperature to continue. This process is known as h
  11. June 2019, Paper 3, Q2(a)(iii) (2 marks): Mammals, including naked mole rats, have temperature receptors that play a role in thermoregulation. The table below lists four statements about mammalian tempe
  12. June 2017, Paper 1, Q1 (1 mark): Which of the options, A to D, correctly describes how an endotherm would respond to an increase in temperature? A dilation of arterioles near the surface of the
  13. June 2017, Paper 1, Q16(a)(i) (1 mark): Using the information provided, explain why many moths and bumblebees are described as endothermic. [1]
  14. June 2017, Paper 1, Q16(a)(ii) (2 marks): It is more difficult for moths and bumblebees to maintain their body temperature than for mammals and birds to maintain their body temperature. Explain why. [2]

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