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The Cell Membrane is a Fluid Mosaic. A cell is the basic unit of life, and all organisms are made up of one or many cells. One of the things that all cells have in common is a cell membrane. It is a barrier that separates a cell from its surrounding environment. This outer boundary of the cell is also called the plasma membrane.
A phospholipid is an amphipathic molecule, meaning is has both a hydrophilic region and a hydrophobic region. Fluid Mosaic Model: The membrane is a fluid structure with a âmosaicâ of various proteins embedded in or attached to a double layer (bilayer) of phospholipids. The Fluidity of Membranes:Membranes are not static sheets of molecules locked rigidly in place.luid Mosaic Model: The membrane is a fluid structure with a âmosaicâ of various proteins embedded in or attached to a double layer (bilayer) of phospholipids.