<prompt> Which of the following does not contain uronic acid?HeparinKeratin sulfateChondroitin sulfateDermatan sulfate  <response>: Glycosaminoglycans mucopolysaccharides are complex carbohydrates containing amino sugars and uronic acidsHeparin -Sulfated glucosamine L iduronic acidKeratan sulfate - galactose N-acetylglucosamineChondroitin sulfate - glucuronic acid N-acetylglucosamineDermatan sulfate - L iduronic acid N-acetylglucosamineReference: DM Vasudevan biochemistry 8th edition 