Final answer:
Creatine phosphate stores energy in phosphate bonds, which is used to quickly produce ATP for initial bursts of muscle contraction, catalyzed by the enzyme creatine kinase.
Step-by-step explanation:
Creatine phosphate functions in the muscle cell by storing energy that will be transferred to ADP to resynthesize ATP. It serves as an energy reserve to quickly generate ATP when muscles begin to contract, using the energy from phosphate bonds. The enzyme creatine kinase catalyzes this reaction, providing an initial rapid burst of energy for muscle contraction.
Creatine phosphate functions in the muscle cell by storing energy that will be transferred to ADP to resynthesize ATP. In a resting muscle, excess ATP transfers its energy to creatine, producing ADP and creatine phosphate. When the muscle starts to contract and needs energy, creatine phosphate transfers its phosphate back to ADP to form ATP and creatine. This reaction is catalyzed by the enzyme creatine kinase.