The cell membranes are mainly composed of:

Step-by-step solution

The fundamental building blocks of all cell membranes are phospholipids, which are amphipathic molecules, consisting of two hydrophobic fatty acid chains linked to a phosphatecontaining hydrophilic head group Related Theory Both prokaryotic and eukaryotic cells have a plasma membrane a phospholipid bilayer with embedded proteins, that separates the internal contents of the cell from its surrounding environment.