Anabolism is a vital metabolic process in living organisms that involves building complex molecules from simpler ones. This process is essential for growth, repair, and maintenance of tissues. For example, when your body synthesizes proteins from amino acids, it is engaging in an anabolic reaction. These proteins are crucial for muscle development and overall health. During anabolism, energy is required, which is often derived from ATP (adenosine triphosphate). This energy helps drive the reactions that create larger molecules, such as carbohydrates and lipids. Anabolism works in tandem with catabolism, the process of breaking down molecules, to maintain a balanced metabolism in the body.