The lipid that contains phosphorus and is a structural component in cell membranes is called a phospholipid.

Here's why:

* Phosphorus: Phospholipids have a phosphate group (PO₄) as part of their structure. This phosphate group is hydrophilic (water-loving).

* Structural Component: Phospholipids are the primary building blocks of cell membranes. They form a bilayer, where the hydrophilic heads face the watery environment inside and outside the cell, while the hydrophobic tails (made of fatty acids) face each other in the interior of the membrane.

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