The sum of all chemical changes within an organism is known as . This complex network is divided into two primary pathways:
: The process of breaking down complex molecules (like food) to release energy. Essentials of Biochemistry
Biochemistry is the scientific study of the chemical substances and vital processes that occur within living organisms. By bridging molecular biology and chemistry, this discipline provides a detailed map of life at its most fundamental level—from individual atoms to complex cellular systems. The sum of all chemical changes within an
: Crucial for long-term energy storage, lipids also form the protective membranes that define cellular boundaries. By bridging molecular biology and chemistry, this discipline
These reactions are almost always facilitated by , which accelerate chemical processes that would otherwise happen too slowly to sustain life. The "Central Dogma"
: These serve as the primary source of energy (e.g., glucose) and provide structural support in plants and microorganisms.