- A Aldolase
- B Phosphoglucose isomerase
- C Phosphofructokinase-1
- D Pyruvate kinase
Correct answer: C. Phosphofructokinase-1
Explanation: Phosphofructokinase-1 (PFK-1) catalyzes the conversion of fructose-6-phosphate to fructose-1,6-bisphosphate. It is the key regulatory enzyme of glycolysis, inhibited by ATP and citrate.
Concept context
Carbohydrates, proteins, lipids, nucleic acids, and enzyme kinetics. Essential foundation for understanding metabolism.