Explain the form and function of the cell membrane. Include which biomolecules it consists of, and ways various objects pass in and out of the cell. (Use vocab!!
Phospholipid bilayer, transport protein, concentration gradient, active transport, and
passive transport)

The cell membrane, also called the plasma membrane, is found in all cells and separates the interior of the cell from the outside environment. The cell membrane consists of a lipid bilayer that is semipermeable. The cell membrane regulates the transport of materials entering and exiting the cell.

Cell membranes contain a variety of biological molecules, notably lipids and proteins. Material is incorporated into the membrane, or deleted from it, by a variety of mechanisms: The cell membrane consists of three classes of amphipathic lipids: phospholipids, glycolipids, and sterols

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