CP ----» C + P + Energy ADP + P + Energy ----» ATP As you can see in the representation of the ATP-CP system above, there are only two reactions involved in this pathway. [Note that the ATP-CP system is also called the ATP-PC system. That's because the substrate, creatine phosphate (CP) is also known as phosphocreatine (PC)]. And there's something unique about these two reactions: they can only occur together. Because they're dependent on each other in this way, they're referred to as a coupled reaction. In order for this pathway to occur, you'll need all of the ingredients shown on the left side of the reactions and the enzyme that catalyzes the whole process. Can you tell me the likely name of the enzyme for this coupled reaction? a. ATPase b. ADPase c. creatine kinase