複選題33. Regarding to biomembranes which statement is (are) CORRECT? (A) Biomembranes in eukaryotes contain three principal classes of lipids: phosphoglycerides, sphingolipids, and sterols. (B) Most lipids and many proteins are laterally mobile in biomembranes. (C) Lipids frequently undergo flip-flop movement within lipid bilayers. (D) Lipid composition influences the physical properties of membranes. (E) Cholesterol and sphingolipids cluster with specific proteins in membrane microdomins.