Question

what is the connective tissue and extracellular matrix composed of?
a) proteoglycans
b) polysaccharides
c) all of these
d) collagen

Explanation:

Connective tissue and its extracellular matrix contain collagen (a fibrous protein providing structure), proteoglycans (glycoproteins with carbohydrate chains), and polysaccharides (like glycosaminoglycans, a key component of proteoglycans and matrix structure). All listed components are part of it.

Answer:

c) All of these