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  • Respiration
    • Anaerobic Respiration- "without oxygen"
      • Glucose-> lactic acid (+energy)
      • Incomplete breakdown of glucose
        • Much less energy is released
      • Oxygen debt
        • Oxygen is needed to oxides the lactic acid into carbon dioxide and water
      • Muscle fatigue can be caused by a build up of lactic acid
        • Blood flowing through the muscles removes the lactic acid.
    • Aerobic Respiration- "with oxygen"
      • Glucose+ oxygen -> carbon dioxide + water (+energy)
      • Inside mitochondria
      • Energy from respiration used for:
        • Building larger molecules from smaller ons
        • Movement in animals
        • Maintaining body temperature in mammals and birds
        • Turn sugars, nitrates and nutrients into amino acids in plants
      • Controlled by enzymes
    • During exercise:
      • Heart rate increases
        • Increases blood flow- supply of sugar and oxygen and removal of carbon dioxide and waste products
          • Rate and depth of breathing increases
      • Rate and depth of breathing increases
      • Muscles store glucose as glycogen, which can then be converted back to glucose for use during exercise.


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