4.3 - Aerobic and Anaerobic Respiration

• What is cellular respiration?

  An exothermic reaction, which transfers energy from glucose, and is constantly occurring in living cells.
• What is metabolism? 


  All of the chemical processes that within an living organism in order to maintain life.
• Aerobic Respiration:

  Glucose + Oxygen -> Carbon Dioxide + Water

  C6H12O6 + 6O2 -> 6CO2 + 6H2O
• Anaerobic Respiration:

  Glucose -> Lactic Acid
• Which process in plants produces the glucose required for respiration?

  Photosynthesis
• How do cells use the energy from respiration?

  • To combine small molecules to make larger molecules
  • To break large molecules into smaller molecules
  • For muscle contraction
  • To maintain our body temperature
  • To move substances around the cell
• What is the word equation for anaerobic respiration in plants and fungi?

  Glucose -> Ethanol + Carbon Dioxide
• Anaerobic respiration doesn’t break down the glucose molecule completely, and so releases less energy than aerobic respiration.
• Anaerobic respiration produces lactic acid which can damage cells and leads to oxygen debt.