Aerobic & Anaerobic respiration

• Aerobic respiration

  • process that happens when oxygen is availble
  • Series of reactions caused by enzymes
  • Through this respiration - cell gets energy to do work or grow
  • Equation = Glucose + Oxygen turns into Carbon Dioxide + Water + Energy
  • Energy released in form of ATP molecules
  • Water & Carbon dioxide - waste products 0 body must get rid of
• Anaerobic respiration

  • What happens when there is not enough oxygen available
  • Less efficient that aerobic respiration - less ATP is produced per molecule of glucose. Because glucose muscle isn't fully broken down
  • Equation = Glucose turns into Lactic Acid

  Advantages

  • Muscles - release energy for short period e.g. 100m sprints

  Disadvantages

  • Lactic acid - released - harmful to body - lactic acid can cause pain (cramp)
  • Not suitable for activities that release energy over a long period e.g. 400m run
• Differences - aerobic - releases more energy slowly, anaerobic, less energy but quicker