📚 StudyHub

🔬 Biology  ·  Biomolecules  ·  NEET

An enzyme that requires a metal ion cofactor for activity is called

  • A Apoenzyme
  • B Holoenzyme
  • C Coenzyme
  • D Proenzyme

Correct answer: B. Holoenzyme

Explanation: Holoenzyme = apoenzyme (protein part) + cofactor (metal ion or coenzyme). The apoenzyme alone is catalytically inactive.

Concept context

Carbohydrates, proteins, lipids, nucleic acids, and enzyme kinetics. Essential foundation for understanding metabolism.

Read the full Biomolecules notes →