A cofactor is an organic or inorganic molecule or ion necessary for proper functioning of some biological catalysts (option E).
A cofactor in biochemistry is a molecule that binds to and regulates the activity of a protein.
A cofactor is a metal or coenzyme responsible for the functioning of an enzyme and must be present.
Therefore, a cofactor is an organic or inorganic molecule or ion necessary for proper functioning of some biological catalysts.
Learn more about cofactors at: https://brainly.com/question/13004767
#SPJ1