This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General, Subject name: Physiology
[{'content': 'Na+ K+ pump which enzyme is used \nSelect and explain. \nA. ATPase, B. GTpase, C. Acetyl CoA, D. NADPH', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (a) ATPaseIn primary active transport, the energy is derived directly from breakdown of ATPOne of these ATPases is sodium-potassium adenosine triphosphatase (Na, K ATPase), which is also known as the Na, K pump', 'role': 'assistant'}]