試題詳解

38. Plasma membrane defines the cell and separates the inside from the outside. Which of the following descriptions about the characteristics of biomembranes are CORRECT?
(A) Biomemrbranes contain three principle classes of lipids: phosphoglycerides, sphingolipids and sterols.
(B) Most lipids and many proteins are laterally mobile in biomembranes.
(C) The asymmetry of lipid composition across the membrane bilayer is a characteristic of all biomembranes, yet the lipid composition would not influence the physical properties of membranes.
(D) The shape of membrane can be changed by transmembrane or peripheral membrane proteins.
(E) Lipid droplets are storage vesicles for lipids, originating in the ER.