Proteoglycans are part of the extracellular matrix; they provide structure, viscosity and lubrication, and adhesiveness. They are composed of proteins conjugated to carbohydrate components called glycosaminoglycans. The glycosaminoglycan component makes up the majority of the mass of a proteoglycan. Which of the following are possible components of glycosaminoglycans? Select all that apply. a. beta-D-fructofuranose b. amylose c. uronic acid d. N- acetylglucosamine

c. uronic acid d. N- acetylglucosamine

Explanation:

Glycosaminoglycan are also known as mucopolysaccharides. They consist of reapeating disaccharides to form a long linear polysaccharides which provide the extracellular matrix with additional physical properties that are not provided by just proteins. They attract water and are highly polar.

Their repeating disaccharide units consist of galactose or uronic acid in addition to amino sugar (e.g N- acetylglucosamine) except for keratan glycosaminoglycan.

meteorologists would compare a new weather map with one 24 h old to see how fast a front is moving.

the answer is "a.) well–developed vascular system."

explanation: