What does the term 'metabolism' refer to?

The term 'metabolism' encompasses all physiological processes that contribute to life, which includes both physical and chemical processes. Metabolism can be divided into two main components: anabolism and catabolism. Anabolism involves the building up of complex molecules from simpler ones, requiring energy, while catabolism is the breakdown of complex molecules into simpler forms, releasing energy in the process.

This definition indicates that metabolism is a comprehensive term that reflects the totality of the biochemical reactions occurring within an organism, crucial for maintaining homeostasis, growth, and energy production. Understanding this broader concept emphasizes that metabolism is not limited to just one type of process; rather, it integrates diverse physiological functions essential for survival.