Cell membranes are primarily made of fatty acids which are the components of lipids. Thus, the correct option is D.
What is a Cell membrane?
A cell membrane may be defined as a biological membrane that separates the interior of the cell with respect to the outer environment. It provides overall protection to the cell from external damage.
The Cell membrane is made up of a phospholipid bilayer. This bilayer is amphipathic in nature. The phosphate group forms a polar head while lipid forms a non-polar tail.
Due to undissolved in water, lipids deliver stability to the cell membrane against the water.
Therefore, Cell membranes are primarily made of fatty acids which are the components of lipids. Thus, the correct option is D.
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