Answer :
Answer:
The correct answer is d. adding phosphate groups (i.e., phosphorylation of substrates)
Explanation:
Kinases are enzymes which transfer a phosphate group from ATP (adenosine triphosphate) to a sustrate. With the adding of the phosphate group, the sustrate can be activated or disactivated. Usually, kinases are involved in "phosphorylation cascades" which regulates biological processes.