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': 'For sodium - Potassium pump the coupling ratio is \nSelect and explain. \nA. 1:01, B. 2:03, C. 3:02, D. 1:04', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. (c) 3:2Na K pump uses the energy to move 3 sodium ions from inside to outside of the cell and moves 2 potassium ions from outside to insideThe coupling ratio is 3:2', 'role': 'assistant'}]