What does the term "metabolism" refer to?

Metabolism refers to the entire set of chemical processes that occur within the body to convert food into energy. This includes the breakdown of carbohydrates, fats, and proteins from the foods you consume. Through these biochemical reactions, energy is produced in the form of adenosine triphosphate (ATP), which is then utilized by cells for various functions, including movement, growth, and maintenance of bodily systems.

In this context, it is essential to recognize that metabolism encompasses both catabolic reactions, which break down molecules to release energy, and anabolic reactions, which use energy to build complex molecules. This broad definition highlights the critical role of metabolism in maintaining life and supporting all physiological functions.

The other options, while related to bodily functions, do not capture the full scope of "metabolism." The building of muscle tissue, storing energy, and regulating body temperature are specific processes that may occur as a result of metabolic activity, but they are not representative of the comprehensive definition of metabolism itself.