Answer:
The correct answer is C. Glycoproteins are always intracellular.
Explanation:
Glycoproteins are molecules composed of a protein bound to one or several carbohydrates, simple or compound. Among other functions, structural and cell recognition stand out when they are present on the surface of plasma membranes.
The term is generally used to refer to a molecule of specific dimensions, usually composed of one or more oligosaccharides covalently linked to specific side chains of polypeptides. They usually have a higher percentage of proteins than carbohydrates. The terms proteoglycan and peptidoglycan designate massive aggregates formed by carbohydrates and proteins or seventh peptides, for which the word molecule has no precise meaning. Proteoglycan particles have a higher percentage of carbohydrates than proteins.
