Other questions in this quiz

2. What does lactic acid cause?

  • muscle fatigue (muscles stop contracting efficiently and hurt)
  • Muscles to increase in size
  • Neutralisation of water in muscles
  • increased rate of digestion

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

  • Stomach digests food more quickly
  • Quicker rate of Gaseous exchange in lungs (so respiration can happen more quickly) and arteries dilate
  • Nerve impulses are sent to brain more quickly
  • Arteries constrict (stopping blood flowing away from muscles)

4. What percent of energy is released by Anaerobic compared to aerobic respiration?

  • 5%
  • 0.5%
  • 50%
  • 500%

5. Which change does NOT take place during exercise?

  • Breathing rate increases
  • Depth of breathing increases
  • Enzymes denature
  • Heart rate increases


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