aerobic + anaerobic

• AEROBIC RESPIRATION

  Glucose + Oxygen → Carbon Dioxide + Water + Energy
• ANAEROBIC RESPIRATION

  Glucose → Lactic Acid + small amount of ATP
• Reactant of aerobic respiration -

  1 - Glucose is absorbed from small intestine and carried to cells dissolved in blood (plasma)

  2 - Oxygen is absorbed in the alveoli of the lungs and is carried to the cells attached to haemoglobin in the red blood cells

  3 - Glucose and Oxygen diffuse into body cells when they are bathed in tissue fluid in the capillary bed
• CO2 diffuses out of the cells into the tissue fluid and back into the capillaries. CO2 then dissolves into the blood plasma and is transported back to the lungs where it difusses into the capillaries and is expired
• Similarites between aerobic and anaerobic respiration

  Both release energy/ make ATP

  Both break down glucose
• Differences between aerobic and anaerobic R.

  • Aerobic R. uses oxygen - Anaerobic doesn't
  • Aerobic R. waste products are water and CO2, anaerobic R. waste product is lactic acid
  • Aerobic R. does not have oxygen debt but anaerobic does
  • Aerobic R. glucose is fully broken down , anaerobic glucose is partially broken down (oxygen needed to break down lactic acid)
  • Aerobic R. is more efficient as it makes more ATP per glucose molecule
• What is an oxygen debt?

  After using anaerobic R. to release energy, oxygen debt is created. As lactic acid is produced in the muscles, breathing deeply after finishing exercise to get oxygen to the muscles breaks down lactic acid to water and CO2