Anaerobic respiration

• What is the primary purpose of respiration in organisms?

  To release energy to fuel their living processes
• What are the two types of respiration mentioned?

  Aerobic and anaerobic respiration
• What does aerobic respiration use as reactants?

  Glucose and oxygen
• What does anaerobic respiration use as a reactant?

  Only glucose
• What is anaerobic respiration in yeast and its significance?

  • Yeast undergoes anaerobic respiration when oxygen runs out.
  • Produces ethanol and carbon dioxide.
  • Important for making alcoholic drinks (beer, wine).
  • Used in bread-making; carbon dioxide helps bread rise.
• What happens to the alcohol produced during bread-making?

  It evaporates as the bread is baked
• How does anaerobic respiration occur in plants?

  • Certain plants and plant cells respire anaerobically.
  • Common in plants growing in marshes with low oxygen concentrations.
• What is the economic importance of anaerobic respiration?

  It is used in the production of many foods by microorganisms
• What is produced during anaerobic respiration in yeast?

  Ethanol and carbon dioxide
• In what type of environment do some plants respire anaerobically?

  In marshes with low oxygen concentrations