Question

Which of the following statements is incorrect?

I. Nearly 1/3^rd of all enzymes requires the presence of metal ions for catalytic function

II. Metal ions form coordinate bond with side chain at active site of metalloenzyme and at the same time form one or more coordinate bonds with the substrate

III. NAD and NAD (coenzymes) contain niacin (vit.)

IV. Coenzyme are organic compounds but their association with the apoenzyme is only transient, usually occurring during catalysis

• A. All
• B. Only III and IV
• C. Only IV
• D. None

Answer 1

Answer: (D)

None