Respiration

• Respiration


  Process of releasing energy from food molecules
• Respiration


  • Exothermic process
  • Occurs in mitochondria
• Aerobic respiration

  1. Glucose + oxygen

  2. Carbon dioxide + water (+ energy)
• Aerobic respiration


  Respiration using oxygen to break down food molecules
• Aerobic respiration releases more energy but more slowly
• Anaerobic respiration


  Respiration occurring without oxygen, releasing less energy but quickly
• Respiration is not breathing, it is a chemical reaction occurring in every cell
• Anaerobic respiration

  1. Glucose

  2. Lactic acid (+ energy)
• Anaerobic respiration releases less energy than aerobic respiration
• Anaerobic respiration produces lactic acid, which builds up causing pain and tiredness, leading to muscle cramps
• Oxygen debt - lactic acid reacts with oxygen to form carbon dioxide and water
• Aerobic respiration


  Slow, releases more energy
• Anaerobic respiration


  Fast, releases less energy