BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Glycosaminoglycans (GAGs), also known as mucopolysaccharides, are negatively-charged polysaccharide compounds. They are composed of repeating disaccharide units that are present in every mammalian tissue.

Detailed explanation-2: -GAGs are negatively charged due to numerous sulfate groups. GAG biosynthesis occurs without a template and is largely controlled by enzyme and substrate availabilities, resulting in a heterogeneous mixture of glycoforms (1).

Detailed explanation-3: -Glycosaminoglycans are long unbranched polysaccharides which are composed of repeating disaccharide units and are also called GAGs or mucopolysaccharides due to their viscous and lubricating properties, just like in mucous secretions.

Detailed explanation-4: -The correct option of the given option is e. The glycosaminoglycan that is not found in the connective tissue is Karastan sulfate.

Detailed explanation-5: -There are four classes of glycosaminoglycans: (1) hyaluronan, (2) chondroitin sulfate (CS)/dermatan sulfate (DS), (3) heparan sulfate (HS)/heparin, and (4) keratan sulfate (KS).