Glycerophospholipids are a class of lipids that are essential components of cell membranes. They consist of a glycerol backbone, two fatty acid tails, and a phosphate group, which can be further modified by various head groups. This structure allows them to form bilayers, creating a barrier that separates the interior of the cell from its external environment. These molecules play a crucial role in cellular functions, including signaling and membrane fluidity. Glycerophospholipids are also involved in the formation of lipid rafts, which are specialized areas within the membrane that facilitate communication and transport between cells.