Elaborate base on medical biochemistry

Catabolism in the body breaks down nutrients like carbohydrates, fats, and proteins into smaller molecules. This process releases energy, primarily in the form of ATP (adenosine triphosphate), which powers cellular activities. For instance, the breakdown of glucose (glycolysis) and fatty acids (beta-oxidation) are key catabolic pathways.

Anabolism uses this released energy to build and repair tissues, synthesize hormones, enzymes, and other essential molecules. For example, protein synthesis from amino acids is an anabolic process vital for growth and repair.

Disruptions in metabolic pathways can lead to various diseases. For example, diabetes mellitus results from problems with glucose metabolism and insulin regulation. Phenylketonuria (PKU) is a genetic disorder where a specific metabolic enzyme is deficient, leading to the buildup of toxic substances. Studying these metabolic processes helps in diagnosing and treating such conditions.