Question

What do most enzymes that utilize ATP also require as a cofactor?
a. Mg2+
b. NAD+
c. Thiazolium pyrophosphate
d. Coenzyme A

Answer 1

Answer: Mg2+

Explanation: ATP(Adenosine triphosphate) is unstable in nature and also shows the property of being electronegative. It is seen that $O^-$ is the electronegative element and it is bonded with the Mg2+ being a positive divalent and thus achieve the stability and reducing the electrostatic repulsion.So, there is the combination between the negatively charged phosphate groups with the Mg2+. Therefore option (a) is the correct answer.