Fatty Acid is the component of a phospholipid that is found in the interior of a lipid bilayer.
Membranes consist of a lipid bilayer (essentially a double layer of phospholipids) in which various proteins are embedded.
Lipids are organized in two closely adjoining sheets that make up a lipid bilayer.
Phospholipids are the main components of the cell membrane.
They are amphipathic molecules composed of a hydrophilic region or polar head and a hydrophobic region composed of two hydrocarbon chains of fatty acids that constitute the apolar region or apolar tails.
The tail of fatty acids without double bonds has the maximum number of hydrogen atoms, for this reason it is considered saturated.
Therefore, we can conclude that the most abundant lipids of cell membranes are phospholipids, molecules that are characterized by having a hydrophilic head and a hydrophobic region composed of two hydrocarbon chains of fatty acids that constitute the apolar region.
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