Aerobic and Anaerobic respiration

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1. What do the changes to breathing and heart rate during exercise cause?

  • Quicker rate of Gaseous exchange in lungs (so respiration can happen more quickly) and arteries dilate
  • Arteries constrict (stopping blood flowing away from muscles)
  • Nerve impulses are sent to brain more quickly
  • Stomach digests food more quickly
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2. Which of these is NOT a use of the energy released in respiration?

  • Maintain a constant body temperature (in animals)
  • Diffusion of Oxygen and CO2, and Osmosis
  • Muscle contraction
  • Used to build up larger molecules from small molecules (e.g Proteins from amino acids)

3. What is used in Aerobic respiration that is NOT used in anaerobic?

  • Water
  • Oxygen
  • Glucose
  • Carbon Dioxide

4. What is produced during anaerobic respiration?

  • amino acids and CO2 (+energy)
  • CO2 and water (+energy)
  • lactic acid (+energy)
  • lactic acid and water (+energy)

5. What does oxygen oxidise lactic acid into?

  • Water and hydrogen
  • Carbon dioxide
  • Water and Carbon dioxide
  • Water


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