Which Mucopolysaccharide does not contain Uronic acid: (A) Heparin, (B) Dermatan sulphate, (C) Keratan sulphate, (D) Hyaluronic acid
Answer is C. Keratan sulphate has N-acetyl glucosamine and galactose. It does not contain uronic acid.
It general all Mucopolysaccharides, contain a disaccharide repeat unit having aminosugar and Uronic acid.