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Skeletal muscles are stimulated to contract by nerves and act as effectors: AQA A‑Level Biology questions

Every AQA A-Level Biology exam question on 3.6.3 Skeletal muscles are stimulated to contract by nerves and act as effectors, 2016–2025, with its mark scheme and examiner’s report.

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1,383 questions

  1. Q01.2

    June 2024 · Paper 2

    4 marks3.6.2 Nervous coordination3.6.3 Skeletal muscles are stimulated to contract by nerves and act as effectors
    The whole paper ↗
    June 2024 Paper 2, question 01.2: Following the release of acetylcholine into a neuromuscular junction, a muscle contraction occurs. Describe the sequence of events, following the release of ace

  2. Q02.1

    June 2024 · Paper 2

    2 marks3.6.3 Skeletal muscles are stimulated to contract by nerves and act as effectors
    The whole paper ↗
    June 2024 Paper 2, question 02.1: Figure 2 shows part of a relaxed myofibril. Figure 2 The myofibril represented in Figure 2 has 34 sarcomeres. The length of every sarcomere is 2 µm After contra

  3. Q02.2

    June 2024 · Paper 2

    1 mark3.6.3 Skeletal muscles are stimulated to contract by nerves and act as effectors
    The whole paper ↗
    June 2024 Paper 2, question 02.2: Which statement correctly describes the changes in length in a sarcomere when a myofibril contracts? Tick () one box. [1 mark] H-zone decreases, I-band increas

  4. Q02.3

    June 2024 · Paper 2

    4 marks3.6.3 Skeletal muscles are stimulated to contract by nerves and act as effectors
    The whole paper ↗
    June 2024 Paper 2, question 02.3: Fast muscle fibres have a higher concentration of glycogen than slow muscle fibres. Explain how the difference in glycogen concentration is related to the diffe

  5. Q10.1

    June 2023 · Paper 2

    2 marks3.6.3 Skeletal muscles are stimulated to contract by nerves and act as effectors
    The whole paper ↗
    June 2023 Paper 2, question 10.1: ATP is essential for muscle contraction (line 1). Describe the roles of ATP in muscle contraction. [2 marks]

  6. Q10.2

    June 2023 · Paper 2

    1 mark3.6.3 Skeletal muscles are stimulated to contract by nerves and act as effectors
    The whole paper ↗
    June 2023 Paper 2, question 10.2: Calculate how long maximum exercise would last if ATP was not resynthesised (lines 3–4). [1 mark] Answer s

  7. Q10.3

    June 2023 · Paper 2

    5 marks3.6.3 Skeletal muscles are stimulated to contract by nerves and act as effectors
    The whole paper ↗
    June 2023 Paper 2, question 10.3: Describe and explain how taking creatine supplements (lines 5–6) and ‘carbohydrate loading’ (lines 6–7) can improve performance of different types of muscle fib

  8. Q04.1

    November 2020 · Paper 2

    3 marks3.6.3 Skeletal muscles are stimulated to contract by nerves and act as effectors
    The whole paper ↗
    November 2020 Paper 2, question 04.1: Explain the banding pattern shown in Figure 3. [3 marks]

  9. Q04.1

    June 2019 · Paper 2

    4 marks3.6.3 Skeletal muscles are stimulated to contract by nerves and act as effectors
    The whole paper ↗
    June 2019 Paper 2, question 04.1: A student looked at the results and concluded that a decrease in pH does cause a decrease in the force of muscle contraction. Use Figure 3 to evaluate this conc

  10. Q04.2

    June 2019 · Paper 2

    3 marks3.6.3 Skeletal muscles are stimulated to contract by nerves and act as effectors
    The whole paper ↗
    June 2019 Paper 2, question 04.2: Another group of scientists suggested that a decrease in the force of muscle contraction is caused by an increase in the concentration of inorganic phosphate, P

  11. Q03.3

    June 2017 · Paper 2

    2 marks3.6.3 Skeletal muscles are stimulated to contract by nerves and act as effectors
    The whole paper ↗
    June 2017 Paper 2, question 03.3: The scientists determined the mean diameter of muscle fibres in trained mice using an optical microscope to examine sections of muscle tissue. The circular area

  12. Q03.4

    June 2017 · Paper 2

    2 marks3.6.3 Skeletal muscles are stimulated to contract by nerves and act as effectors
    The whole paper ↗
    June 2017 Paper 2, question 03.4: The scientists also compared the diameter of samples of muscle fibres taken from young mice and adult mice. Some of their results are shown in Figure 4. Figure

  13. Q01.2

    June 2017 · Paper 3

    2 marks3.6.3 Skeletal muscles are stimulated to contract by nerves and act as effectors
    The whole paper ↗
    June 2017 Paper 3, question 01.2: The presynaptic knob contains actin filaments and myosin molecules. The myosin molecules can attach to mitochondria and move them towards the presynaptic membra

  14. Q02.1

    Specimen · Paper 2

    5 marks3.6.3 Skeletal muscles are stimulated to contract by nerves and act as effectors
    The whole paper ↗
    Specimen Paper 2, question 02.1: [ ]

  15. Q06.1

    Specimen · Paper 3

    25 marks3.6.1 Stimuli, both internal and external, are detected and lead to a response3.6.3 Skeletal muscles are stimulated to contract by nerves and act as effectors
    Mark scheme (PDF)
    The whole paper ↗
    Specimen Paper 3, question 06.1: Write an essay on one of the topics below. EITHER 6 The importance of movement in living organisms. [25 marks] OR 0 6 . 1
All 15 questions on Skeletal muscles are stimulated to contract by nerves and act as effectors, as a list
  1. June 2024, Paper 2, Q01.2 (4 marks): Following the release of acetylcholine into a neuromuscular junction, a muscle contraction occurs. Describe the sequence of events, following the release of ace
  2. June 2024, Paper 2, Q02.1 (2 marks): Figure 2 shows part of a relaxed myofibril. Figure 2 The myofibril represented in Figure 2 has 34 sarcomeres. The length of every sarcomere is 2 µm After contra
  3. June 2024, Paper 2, Q02.2 (1 mark): Which statement correctly describes the changes in length in a sarcomere when a myofibril contracts? Tick () one box. [1 mark] H-zone decreases, I-band increas
  4. June 2024, Paper 2, Q02.3 (4 marks): Fast muscle fibres have a higher concentration of glycogen than slow muscle fibres. Explain how the difference in glycogen concentration is related to the diffe
  5. June 2023, Paper 2, Q10.1 (2 marks): ATP is essential for muscle contraction (line 1). Describe the roles of ATP in muscle contraction. [2 marks]
  6. June 2023, Paper 2, Q10.2 (1 mark): Calculate how long maximum exercise would last if ATP was not resynthesised (lines 3–4). [1 mark] Answer s
  7. June 2023, Paper 2, Q10.3 (5 marks): Describe and explain how taking creatine supplements (lines 5–6) and ‘carbohydrate loading’ (lines 6–7) can improve performance of different types of muscle fib
  8. November 2020, Paper 2, Q04.1 (3 marks): Explain the banding pattern shown in Figure 3. [3 marks]
  9. June 2019, Paper 2, Q04.1 (4 marks): A student looked at the results and concluded that a decrease in pH does cause a decrease in the force of muscle contraction. Use Figure 3 to evaluate this conc
  10. June 2019, Paper 2, Q04.2 (3 marks): Another group of scientists suggested that a decrease in the force of muscle contraction is caused by an increase in the concentration of inorganic phosphate, P
  11. June 2017, Paper 2, Q03.3 (2 marks): The scientists determined the mean diameter of muscle fibres in trained mice using an optical microscope to examine sections of muscle tissue. The circular area
  12. June 2017, Paper 2, Q03.4 (2 marks): The scientists also compared the diameter of samples of muscle fibres taken from young mice and adult mice. Some of their results are shown in Figure 4. Figure
  13. June 2017, Paper 3, Q01.2 (2 marks): The presynaptic knob contains actin filaments and myosin molecules. The myosin molecules can attach to mitochondria and move them towards the presynaptic membra
  14. Specimen, Paper 2, Q02.1 (5 marks): [ ]
  15. Specimen, Paper 3, Q06.1 (25 marks): Write an essay on one of the topics below. EITHER 6 The importance of movement in living organisms. [25 marks] OR 0 6 . 1

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