Anabolic reactions release energy, while catabolic reactions use energy.

Anabolic Reactions

Biochemical processes in cells that synthesize complex molecules from simpler ones, requiring energy, and crucial for growth, repair, and storage.

Catabolic Reactions

Catabolic Reactions are metabolic processes that break down molecules into smaller units, releasing energy stored in chemical bonds.

Energy

The capacity to do work or produce heat; it exists in various forms such as kinetic, potential, thermal, electrical, chemical, nuclear, and mass energy.