Answer: Holoenzyme.
- A Coenzyme
- B Holoenzyme
- C Zymogen
- D Isoenzyme
Correct answer: B. Holoenzyme
Explanation: The whole active enzyme (protein apoenzyme + non-protein cofactor) is the holoenzyme.
As substrate concentration rises, reaction rate increases steeply at first, then plateaus at Vmax once every enzyme molecule is working at full capacity; Km is the substrate concentration giving half-maximal rate, and a LOWER Km means the enzyme reaches that rate with less substrate (higher affinity).
Concept context
Carbohydrates, proteins, lipids, nucleic acids, and enzyme kinetics. Essential foundation for understanding metabolism.