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Let's review. Phospholipids are a type of lipid-one of the four main classes of molecules that make up living things. Phospholipids serve a very important function by surrounding and protecting internal cell components.
Considerations. As a class, phospholipids are one of the most important molecules in your body. They provide the bilayered envelopes that make cells possible, and they serve in a variety of other structural and functional roles. well-balanced diet provides the nutrients needed for phospholipid synthesis. Photo Credit Jack Puccio/iStock/Getty Images. Phospholipids comprise an important class of biological molecules that serve both structural and functional roles in the human body.