What is the constructive phase of metabolism called?

The constructive phase of metabolism is known as anabolism. This process involves the synthesis of complex molecules from simpler ones, which generally requires energy. During anabolism, the body builds up tissues and stores energy for future use. This includes processes like the formation of proteins from amino acids and the synthesis of glycogen from glucose, which are essential for growth and maintenance of body structures.

In contrast, catabolism, which is not the correct answer, refers to the breakdown of complex substances into simpler ones, releasing energy in the process. Homeostasis, while related to the body's regulation and maintenance of a stable internal environment, does not specifically pertain to metabolic processes. Oxidation describes a chemical reaction involving the loss of electrons, often associated with catabolic processes, rather than the constructive activities of anabolism. Thus, the answer identifies the crucial role anabolism plays in building and repairing the body.