Metabolism

• What is metabolism defined as?

  The sum of all reactions
• What do most metabolic reactions require?

  Enzymes
• What process do catabolic reactions perform?

  Breakdown of large molecules
• What process do anabolic reactions perform?

  Synthesis of cellular components
• What do anabolic reactions synthesize cellular components from?

  Small molecules
• Which reaction, catabolic or anabolic, is the breakdown of excess proteins in the liver?

  Catabolic
• Which organ breaks down excess proteins?

  Liver
• Which organ excretes urea?

  Kidney
• What molecules are required for the formation of a lipid molecule?

  Glycerol and three fatty acids
• Which molecules are used to form amino acids that make proteins?

  Glucose and nitrate ions