Glycosaminoglycans (GAGs) are heteropolysaccharides composed of repeating disaccharide units. These units have some similar characteristics that allow them to be identified as GAGs. Which of the structures are examples of glycosaminoglycans?

GAGs are heteropolysaccharides made up of repeating disaccharide units [acid sugar - amino sugar] n; because of their negative charge at physiological pH, they tend to be extended in solution. They repel each other, producing the "slippery" consistency of mucous secretions and synovial fluid.

Explanation:

58750.08068 is the answer i think

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.