This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMGE 2019, Subject name: Biochemistry
Synol fluid contains- 
Select and explain. 
A. Hyaluronic acid, B. Chondroitin sulphate, C. Keratan sulphate, D. Dermatan sulphate
A: Hyaluronic acid
Answer: A: Hyaluronic acid 
Explanation: Hyaluronic acid Longest GAG. Present in synol fluid & vitreous humor. Does not contain any sulfate. Made up of N-Acetyl Glucosamine & D-Glucuronic acid. Forms clear, highly viscous, non-compressible solutions that serve as a lubricant Role in Cell Migration during Morphogenesis Role in Wound Healing. Provides tensile strength and elasticity.