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2. Aerobic respiration

  • glucose → oxygen → lactic acid (+ energy)
  • glucose + oxygen → carbon dioxide + water (+ energy)
  • glucose → lactic acid (+ energy released)
  • oxygen → glucose → energy (+ lactic acid)

3. The skeleton protects

  • vital organs
  • muscles
  • joints
  • bones

4. Oxygenation takes place in the

  • blood vessels
  • lungs
  • heart
  • bones

5. Anaerobic respiration

  • oxygen → glucose → energy (+ lactic acid)
  • glucose → lactic acid (+ energy released)
  • glucose → oxygen → lactic acid (+ energy)
  • glucose + oxygen → carbon dioxide + water (+ energy)

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