Metabolism

• What is metabolism?

  The sum of all the reactions in a cell or organism
• What happens to organic molecules in metabolism?

  They are made or broken down
• What are the products of lipid metabolism?

  • Glycerol
  • Fatty acids
• What are the products of carbohydrate metabolism?

  • Sugars
• What are the products of protein metabolism?

  • Amino acids
• What can glucose be converted to in animals?

  Glycogen
• What can glucose be converted to in plants?

  Cellulose
• What is the reaction that converts glucose and nitrate into proteins?

  Glucose + nitrate → amino acids → proteins
• What happens to excess proteins in the body?

  They are broken down to form urea for excretion
• What is the overall process of metabolism in terms of organic molecules?

  • Organic molecules are made or broken down
  • Lipids → glycerol + fatty acids
  • Carbohydrates → sugars
  • Proteins → amino acids
• What is respiration?

  The breakdown of glucose to transfer energy to the cell
• How does respiration benefit the cell?

  It transfers energy to the cell
• What is photosynthesis?

  The process by which plants and algae produce food using light
• What organisms are involved in photosynthesis?

  Plants and algae
• What is the relationship between respiration and photosynthesis?

  • Respiration breaks down glucose to release energy.
  • Photosynthesis produces glucose using light energy.
  • Both processes are essential for energy transfer in living organisms.