They surround ALL cells
They are made up of all kinds of molecules
They control the cells activity
They are lipids
They all vary in size
The cell membrane, also known as the plasma membrane, is a thin coat of lipids that surrounds a cell and forms the physical boundary between the cell and its environment. ;
The cell membrane surrounds all cells and is made up of various molecules, including lipids and proteins. It controls cell activity by regulating the movement of substances into and out of the cell. The size and structure of cell membranes can vary depending on the type of cell.
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