The composition of lipids in the outer and inner monolayers of cell membrane lipid bilayers is
A)asymmetrical; i.e.,different in each monolayer.
B)identical in each monolayer.
C)twice as concentrated in the inner monolayer as in the outer monolayer.
D)highly random for each monolayer.
E)the same for all cell plasma membranes but different from the composition in mitochondrial and chloroplast membranes.

Question

Quizplus · Accepted Answer

The composition of lipids in the outer and inner monolayers of cell membrane lipid bilayers is asymmetrical, meaning the types and distributions of lipids differ between the two layers. This asymmetry is important for various cellular functions, including cell signaling and membrane fluidity.

The Composition of Lipids in the Outer and Inner Monolayers