This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
[{'content': 'Which of the followoing is major site of Expression of GLUT5? \nSelect and explain. \nA. Renal tubules, B. Brain, C. Placenta, D. Sperm', 'role': 'user'}, {'content': "Answer: D \nExplanation: GLUT5 functions as Fructose transpoer in sperm. Ref: Ganong's Review of Medical Physiology, 23rd Edition, Page 320.", 'role': 'assistant'}]