Question

Which one of these is not a characteristic of prosthetic groups?

• A. They are made up of amino acids
• B. They are inorganic compounds
• C. They are tightly bound to the apoenzyme
• D. They are a category of cofactors

Answer 1

The correct option is A

They are made up of amino acids

A prosthetic group is a tightly bound, specific non-polypeptide unit required for the biological function of some proteins. The prosthetic group may be organic (such as a vitamin, sugar, or lipid) or inorganic (such as a metal ion), but is not composed of amino acids.