Anabolism is the process of building up large proteins from amino acids. Which option correctly identifies this process?

• A. Catabolism
• B. Anabolism
• C. Digestion
• D. Metabolism

Answer: (B)

Anabolism is the process of building up large molecules from smaller units, which requires energy. Protein synthesis from amino acids is a classic example, as it assembles small building blocks into a larger, complex molecule. Catabolism, in contrast, breaks down molecules to release energy. Digestion refers to the breakdown of food in the digestive tract, a specific subset of catabolic activity. Metabolism is the overall set of all chemical reactions in the body, encompassing both anabolic and catabolic processes. Because the scenario describes constructing proteins from amino acids, the term that fits best is anabolism.