C1.1.2—Role in metabolism
Metabolism is the total network of enzyme-controlled chemical reactions that build, break down and transform molecules inside living cells and organisms.
- Syllabus
- First assessment 2025
- Objective
- C1.1.2
- Level
- HL
Concept essentials
- Metabolism is the total set of chemical reactions in cells or organisms.
- Metabolic pathways are controlled by specific enzymes.
- Each pathway step may depend on a different enzyme.
- Inhibiting or lacking an enzyme can block a pathway.
ConceptIB Biology HL