Respiration

• What is the primary purpose of cellular respiration?

  To transfer energy to an organism from food
• In which types of cells does cellular respiration occur?

  In all living cells, all the time
• What type of chemical reaction is respiration?

  It is an exothermic chemical reaction
• What does it mean that respiration is an exothermic reaction?

  It means it releases energy
• What type of respiration uses oxygen?

  Aerobic respiration
• What type of respiration does not involve oxygen?

  Anaerobic respiration
• What is the equation for aerobic respiration in animals?

  Glucose + oxygen —---> carbon dioxide + water
• What is the equation for anaerobic respiration?

  Glucose —---> lactic acid
• What is the equation for anaerobic respiration in plants and yeast cells?

  Glucose —----> ethanol + carbon dioxide
• What are the main reasons organisms need energy?

  • Chemical reactions to build larger molecules
  • Movement
  • Keeping warm
• Effects of anaerobic respiration on a person's body


  • Increased heart rate to provide oxygen needed to break down lactic acid
  • Heavy breathing to repay oxygen debt