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': 'Mucopolysaccharide which function as a lubricant and shock absorber in synovial fluid is \nSelect and explain. \nA. Heparin, B. Hyaluronic acid, C. Keratin sulphate, D. Chondroitin sulphate', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Hyaluronic Acid:\nHyaluronic acid is an important GAG found in the ground substance of synovial fluid of joints and vitreous humor of eyes. It is also present as a ground substance in connective tissues\xa0and forms a gel around the ovum. Hyaluronic acid serves as a lubricant and shock absorbent in joints.', 'role': 'assistant'}]