Metabolism

• What is the 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?

  Glucose and oxygen
• What does anaerobic respiration use?

  Only glucose
• What is metabolism?

  • All chemical reactions in the cells of an organism
  • Includes respiration
  • Builds up and breaks down molecules
  • Controlled by enzymes
• What happens to substances in plants following photosynthesis?

  They undergo reactions that build up substances
• What happens to compounds in plants after photosynthesis?

  They are broken down in various reactions
• What happens to substances in animals after digestion?

  They undergo reactions that build up substances
• What is glycogen broken down for in animals?

  To meet short-term demands for energy
• What is broken down longer term in animals?

  Lipids
• When may proteins be broken down in animals?

  During starvation
• What are the key processes involved in metabolism?

  • Building up molecules
  • Breaking down molecules
  • Controlled by enzymes