What are phospholipids, Biology

What are phospholipids?

Phospholipids are molecules made of glycerol bound to two long molecules of fatty acids and to one phosphate group. Thus, phospholipids are amphipathic molecules, i.e., they have a non-polar portion, because the long fatty acid chains, and a polar portion, because of the group phosphate.

Phospholipids are the main part of cell membranes. Sphingomyelin, the substance that forms the myelin sheath of axons in the nervous system, is a phospholipid too.

Lipids and Fat Review - Image Diversity: phospholipid molecule


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