Cell membranes are asymmetrical. Which of the following is a most likely explanation?
A)The cell membrane forms a border between one cell and another in tightly packed tissues such as epithelium.
B)Cell membranes communicate signals from one organism to another.
C)Cell membrane proteins are determined as the membrane is being packaged in the ER and Golgi.
D)The "innerness" and "outerness" of membrane surfaces are predetermined by genes.
E)Proteins can only span cell membranes if they are hydrophobic.

Question

Quizplus · Accepted Answer

During the packaging of membranes in the endoplasmic reticulum (ER) and Golgi, specific membrane proteins are sorted and placed in either the inner or outer leaflet of the membrane, resulting in membrane asymmetry.

Cell Membranes Are Asymmetrical