Respiration

• What type of reaction is cellular respiration?

  • Exothermic - heat and energy are produced in the reaction which is given out to the surroundings
  • CONTINUOUS - always occuring in cells
• What are the differences between aerobic and anaerobic ?

  • Anaerobic - lactic acid (animals) is produced and Yeast: ethonol and carbon dioxide. Some plants: ethonol and carbon dioxide. Chemical energy is still stored
  • Aerobic - carbon dioxide and water is produced - no chemical energy is stored
  • Anaerobic - small amount of energy is released
  • Aerobic - large amount of energy is released
• Why do organisms need respiration/energy?

  • build large molecules ie water (product)
  • Maintain body temp
  • Muscular contractions - ie chewing food
• What is the aerobic equation?

  • glucose + oxygen ---> carbon dioxide + water
  • Same but opposite symbol equ as photosynth
• What is the anaerobic equation

  • glucose ---> lactic acid
  • Plant and yeast cells - glucose ---> ethanol + carbon dioxide
• What is anaerobic repiration in yeast cells called

  • fermentation