Biological Membranes are Composed Primarily Of

Question

Biological membranes are composed primarily of
A) nucleotides and nucleosides.
B) enzymes,electron acceptors,and electron donors.
C) fatty acids.
D) monosaccharides.
E) lipids.

Accepted Answer

Biological membranes are primarily composed of lipids, particularly phospholipids, which have hydrophilic (polar) heads and hydrophobic (nonpolar) tails. These lipids form a bilayer structure that serves as a barrier between the interior and exterior of the cell, regulating the passage of molecules in and out of the cell. While membranes also contain proteins and carbohydrates, they are not the primary component of the membrane.