Final answer:
The statement is true; the calcium pump (Ca2+ ATPase) is indeed an ATPase enzyme, which transports calcium ions by using energy from the hydrolysis of ATP.
Step-by-step explanation:
The statement that the calcium pump is also an ATPase enzyme is True. The calcium pump, specifically Ca2+ ATPase, is a type of ATPase that moves calcium ions (Ca2+) across cellular membranes against their concentration gradient. This process is a form of active transport, requiring the hydrolysis of ATP to provide the necessary energy. The ATPase activity of the calcium pump refers to its ability to catalyze the decomposition of ATP into ADP and an inorganic phosphate, which ultimately provides energy for the pump to transport calcium ions. This mechanism is similar to that of other well-known ATPase enzymes, such as the sodium-potassium pump (Na+/K+ ATPase), which maintains the electrochemical gradients of sodium and potassium ions across the cell membrane.