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: Biochemistry
[{'content': 'Choose the false statement regarding proteoglycans: \nSelect and explain. \nA. Chondroitin sulfate is a Proteoglycan, B. They hold less amount of water, C. They are made up of sugar and aminoacids, D. They carry charge', 'role': 'user'}, {'content': "Answer: B \nExplanation: Since the high fixed negative charge density of the proteoglycans allows them tohold enormous amounts of water. The amount of water depends on the amount of proteoglycans, which decreases with aging. Ref: Harper's Illustrated Biochemistry 27th Edition, Page 118, 556, 557; Functions of the Proteoglycans By Ciba Foundation Symposium, 2008, Page 143.", 'role': 'assistant'}]