- A Allosteric site
- B Active site
- C Binding domain
- D Catalytic cleft
Correct answer: B. Active site
Explanation: The active site is the specific region of an enzyme where substrate binds and the reaction occurs. It has a complementary shape to the substrate.
Concept context
Carbohydrates, proteins, lipids, nucleic acids, and enzyme kinetics. Essential foundation for understanding metabolism.