Respiration

• Respiration


  An exothermic reaction which occurs in every cell, and releases energy for metabolic processes
• Aerobic respiration

  • Occurs in mitochondria
• Anaerobic respiration

  • Occurs in cytoplasm
• Aerobic respiration

  Glucose + Oxygen - carbon dioxide + water + (ATP)
• Anaerobic respiration

  Occurs without oxygen
• Anaerobic respiration

  Releases a small amount of energy
• Anaerobic respiration

  Occurs during vigorous exercise
• Similarities between aerobic and anaerobic respiration


  • Both need glucose to happen
  • Both release energy
  • Both occur during exercise
  • Both occur in muscle cells
• Differences between aerobic and anaerobic respiration


  • Anaerobic happens in cytoplasm, aerobic happens in mitochondria
  • Anaerobic produces lactic acid, aerobic produces CO2 and water
  • Anaerobic respiration happens without oxygen, aerobic respiration happens all the time
• Anaerobic respiration


  cells need to respire to produce energy for muscle contraction but if not enough oxygen can reach the muscles anaerobic respiration occurs
• • during exercise muscle cells respire more than at rest
  • therefore oxygen and glucose must be delivered more quickly and carbon dioxide removed
  • we do this by increasing heart rate, breathing rate and volume of each breath
  • if not enough oxygen can reach the respiring muscles then anaerobic respiration starts