Respiration

• Why is energy important in biology?

  For movement, warmth, and chemical reactions
• What is the process that supplies energy in cells?

  Cellular respiration
• What type of reaction is respiration?

  Exothermic reaction
• Where does respiration take place?

  In all living cells
• What happens during aerobic respiration?

  Glucose reacts with oxygen to produce energy
• What is the word equation for aerobic respiration?

  Glucose + Oxygen → Carbon Dioxide + Water + Energy
• Why does aerobic respiration release a great deal of energy?

  Because glucose is fully oxidized
• What happens when there is not enough oxygen for cells?

  Cells carry out anaerobic respiration
• What do muscle cells require a lot of energy for?

  For contraction
• What is produced during anaerobic respiration in muscles?

  Lactic acid
• What is the equation for anaerobic respiration in muscles?

  Glucose → Lactic Acid + Energy
• How does anaerobic respiration differ from aerobic respiration?

  Anaerobic respiration does not require oxygen
• In which cells can anaerobic respiration take place?

  In muscle, plant, and yeast cells
• What is produced during anaerobic respiration in yeast?

  Ethanol and carbon dioxide
• What is anaerobic respiration in yeast called?

  Fermentation
• How is fermentation useful in making alcoholic drinks?

  It produces ethanol
• How does fermentation help in bread making?

  Carbon dioxide creates bubbles causing rise
• What are the key differences between aerobic and anaerobic respiration?

  • Aerobic respiration requires oxygen; anaerobic does not.
  • Aerobic produces more energy; anaerobic produces less.
  • Aerobic produces carbon dioxide and water; anaerobic produces lactic acid or ethanol.
• What are the products of aerobic respiration?

  • Carbon dioxide
  • Water
  • Energy
• What are the products of anaerobic respiration in muscles?

  • Lactic acid
  • Energy
• What are the products of anaerobic respiration in yeast?

  • Ethanol
  • Carbon dioxide
  • Energy
• What are the uses of fermentation in food production?

  • Producing alcoholic beverages
  • Making bread rise