試題詳解

9. Which of the following statements regarding "Glycosylation" is CORRECT?
(A) The sugar-modified molecules, called glycoproteins and glycolipids, constitute the majority of cell surface and extracellular proteins and lipids.
(B) Golgi apparatus plays an important role in the glycosylation of proteins and lipids.
(C) The N-linked sugar chains are added to asparagine residues of the protein in the ER.
(D) The O-linked sugar chains are added to the hydroxyl group of tyrosine residues of a proteoglycan core protein.
(E) Glycosyltransferases add specific sugar residues to glycans, while glycosidases remove specific sugar residues.