RESPIRATION

• Aerobic Respiration

  Glucose + oxygen --> carbon dioxide + water
• Energy needed for:

  • Movement
  • Warmth
  • Chemical reactions to build larger molecules
• • Energy we need is supplied by a process called respsiration
• Anaerobic respiration in muscles

  • Muscle cells need a lots of energy for contraction
  • When there is a shortage of oxygen, muscle cells respire anaerobically
• Anaerobic respiration in muscle cells

  glucose --> lactic acid

  • During anaerobic respiration in muscles, glucose in converted into lactic acid
  • Anaerobic respiration does not require oxygen
  • Anaerobic respiration releases much less energy than aerobic respiration as in anaerobic respiration the oxidation of glucose is incomplete
• Anaerobic respiration in plant and yeast cells

  glucose --> ethanol + carbon dioxide

  • Anaerobic respiration in yeast cells is called fermentation