Aerobic and anaerobic respiration

• What is the main source of energy for organisms?

  Molecules of glucose
• What process do we use to release energy from glucose?

  Cellular respiration
• How is cellular respiration described in terms of energy?

  As an exothermic reaction
• What happens to glucose molecules during cellular respiration?

  They are broken apart to release energy
• What is the definition of exothermic reaction?

  A reaction that releases energy
• What is metabolism?

  All chemical processes in a living organism
• What are the two types of respiration?

  • Aerobic respiration
  • Anaerobic respiration
• When does aerobic respiration occur?

  When there is enough oxygen
• Where does aerobic respiration take place in cells?

  In the mitochondria
• What is the word equation for aerobic respiration?

  Glucose + oxygen → carbon dioxide + water
• How many molecules of each substance are involved in aerobic respiration?

  Six of each except glucose
• What is the relationship between photosynthesis and aerobic respiration?

  They are opposite processes
• What is anaerobic respiration?

  Respiration without oxygen
• When do we rely on anaerobic respiration?

  When we can't get enough oxygen
• What is the word equation for anaerobic respiration in humans?

  Glucose → lactic acid
• Why do we prefer aerobic respiration over anaerobic respiration?

  Aerobic is more efficient and complete
• What is a consequence of anaerobic respiration?

  Lactic acid builds up in muscles
• What is anaerobic respiration in plants and yeast?

  Glucose converts to ethanol and carbon dioxide
• What is fermentation in yeast?

  Conversion of glucose to ethanol and CO2
• How is fermentation used in industry?

  • Yeast is added to bread for air pockets
  • Yeast is used to produce beer and wine
• What is the main product of fermentation in yeast?

  Ethanol
• What gas is produced during fermentation?

  Carbon dioxide