Enzymes and respiration

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  • Created by: ronna_G
  • Created on: 01-04-16 13:32
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  • Enzymes & Respiration
    • Aerobic Respiration  (NEEDS OXYGEN)
      • The process of releasing energy from food in cells.
      • Released    energy     Make molecules to help you grow    - Repairing cells
      • Long Term
      • Glucose + oxygen =>carbon dioxide + water
    • Changes during exercise
      • Temperature increases
      • Heart rate increases
      • More blood circulates
      • Fatigue    (Build up of lactic acid)
      • Breathing rate increases
      • Vasodilation       Skin goes red
    • Muscle cramps (Lactic Acid)
      • Lactic Acid  -Product of anaerobic Respiration
      • Stops them contracting and relaxing
      • They become fatigued
      • Lactic acid is poisonous to the muscles
    • Anaerobic     Respiration     (NO OXYGEN)
      • Anaerobic respiration is used when too little oxygen is reaching the muscles.
      • Anaerobic respiration is the incomplete breakdown of glucose =Build up of lactic acid
      • Equation  Glucose ----> Lactic acid
        • Lactic acid is poisonous and your body can only tolerate a little bit of it.
      • When yeast uses anaerobic respiration it is called fermentation     Glucose----> Ethanol ----> carbon dioxide
      • Oxygen Debt    If you use anaerobic respiration you need oxygen to break down the lactic acid breakdown.   The extra oxygen used to get rid of the acid is called oxygen debt.
      • Key Point        Anaerobic respiration takes place in cells in the cytoplasm where there is lack of oxygen.
      • Short Term


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