Final answer:
Metabolism involves anabolic and catabolic reactions that occur in every cell to keep you alive.
Step-by-step explanation:
Metabolism is the sum of all anabolic and catabolic reactions that take place in the body. Both anabolism and catabolism occur simultaneously and continuously in every cell to keep you alive. Anabolic reactions use energy to build larger molecules from smaller ones, while catabolic reactions break down larger molecules to release energy.