<prompt> All of the following are true regarding proteoglycans, EXCEPT:-Chondroitin sulfate is a glycosaminoglycanThey hold less amount of waterThey are made up of sugar and aminoacidsThey carry negative charge  <response>: Chondroitin sulfate is a glycosaminoglycan - option 1 is true Proteoglycan core protein Amino acid Glycosaminoglycan sugar - option 3 is true Sulfate and acetyl groups confer negative charge to the amino acids - option 4 is true As they are negatively charged, they can hold large amount of water, therefore - option 2 is wrong. 