Structure of the plasma membrane (article) | Khan Academy
https://www.khanacademy.org/science/ap-biology/cell-structure-and-function/plasma-membranes/a/structure-of-the-plasma-membrane
WEBThis model has evolved over time, but it still provides a good basic description of the structure and behavior of membranes in many cells. According to the fluid mosaic model, the plasma membrane is a mosaic of components—primarily, phospholipids, cholesterol, and proteins—that move freely and fluidly in the plane of the membrane.
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