Digestion and cellular respiration are examples of catabolism. Catabolic reactions break down biomolecules to make them easier to use. Catabolism is the release of energy and disorganization of matter.
Metabolism is a process performed by living organisms that allows them to grow and organize themselves internally. Metabolism breaks large molecules like food down into energy the body can use. The energy drives bodily processes that must be performed to survive. Metabolism consists of two types of interdependent phases: catabolism and anabolism. Anabolic reactions are associated with growth and involve the joining of smaller molecules to form larger, more complex molecules.