This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General Physiology, Subject name: Physiology
[{'content': 'All of the following are examples of primary active transpo, except: \nSelect and explain. \nA. The Na+/K+ ATPase in the red cell membrane, B. The H+/K+ ATPase in the parietal cell of stomach, C. Na+/ glucose sympoer, D. SERCA in the skeletal muscle', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Sodium/glucose sympoer is an example of secondary active transpo. SERCA: Sarcoplasmic Endoplasmic Reticulum Ca++ ATPase. It transpos two molecules of Ca++ for each molecule of ATP hydrolysed. Ca++ pumped out of the sarcoplasm, into the longitudinal tubules, to decrease the sarcoplasmic and thus causes muscle relaxation.', 'role': 'assistant'}]