Lesson 4.4.2.2

4.4.2.2 Response to exercise Quiz: AQA Biology, Unit 4

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

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Lesson 4.4.2.2, Response to exercise: 20 multiple choice questions for the AQA GCSE Biology (8461), Unit 4: Bioenergetics, written with Revision Ninja.

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The 20 questions

  1. Which body rate increases during exercise to pump more oxygenated blood to muscles?

    • Filtration rate
    • Heart rate
    • Transpiration rate
    • Digestion rate

  2. Along with heart rate and breathing rate, what else increases during exercise?

    • Body height
    • Blood glucose
    • Muscle length
    • Breath volume

  3. Which process takes place in muscles when oxygen supply is insufficient during exercise?

    • Anaerobic respiration
    • Photosynthesis
    • Cellular digestion
    • Aerobic respiration

  4. What builds up in muscles during anaerobic respiration in exercise?

    • Starch
    • Ethanol
    • Lactic acid
    • Urea

  5. What is created by the build-up of lactic acid after exercise?

    • A glycogen store
    • A starch deposit
    • An oxygen debt
    • An oxygen surplus

  6. What term describes the extra oxygen needed after exercise to remove accumulated lactic acid?

    • Oxygen capacity
    • Lung volume
    • Oxygen debt
    • Tidal volume

  7. What chemical accumulates in muscle cells during vigorous activity to cause fatigue?

    • Lactic acid
    • Glucose
    • Urea
    • Carbon dioxide

  8. (HT only) Where is lactic acid converted back into glucose?

    • The kidneys
    • The skin
    • The brain
    • The liver

  9. Which transport medium carries lactic acid from fatigued muscles to the liver?

    • Lymph fluid
    • Bile
    • Blood
    • Nerve impulses

  10. Where in the human body is lactic acid converted back into glucose after exercise?

    • Kidneys
    • Lungs
    • Liver
    • Heart

  11. Why do breathing rate and breath volume increase during exercise?

    • Reduce heart rate
    • Increase glucose levels
    • Lower body temperature
    • Supply more oxygen

  12. Why does heart rate increase when a person begins to exercise?

    • Lower blood pressure
    • Cool down muscles
    • Deliver oxygenated blood
    • Remove excess glucose

  13. A jogger breathes heavily after stopping. Which concept explains this?

    • Oxygen surplus
    • Osmotic pressure
    • Photosynthesis in muscles
    • Oxygen debt

  14. What causes muscles to stop contracting efficiently during prolonged vigorous exercise?

    • Glucose store expansion
    • Carbon dioxide debt
    • Excess oxygen levels
    • Lactic acid build-up

  15. A student investigates how exercise affects pulse rate. Which is the dependent variable?

    • Room temperature
    • Type of exercise
    • Pulse rate
    • Length of warm-up

  16. What happens to human muscles during long periods of vigorous activity?

    • They produce oxygen
    • They expand rapidly
    • They store glucose
    • They become fatigued

  17. Which system transports oxygenated blood to the muscles during exercise?

    • The reproductive system
    • The circulatory system
    • The digestive system
    • The excretory system

  18. Why do muscle cells switch to anaerobic respiration during vigorous exercise?

    • Excess carbon dioxide
    • Insufficient glucose supply
    • High body temperature
    • Insufficient oxygen supply

  19. What effect does a build-up of lactic acid have on muscles?

    • Hypertrophy
    • Fatigue
    • Growth
    • Cramps

  20. Where is lactic acid transported by the blood to be converted to glucose?

    • Heart
    • Lungs
    • Kidneys
    • Liver

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