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The two sides of the plasma membrane have different lipid and protein composition. EXPLANATION: Because the membrane serves different functions on the cytoplasmic and exterior surfaces, the structure and composition of the surfaces must be different. 2 Which of the following best describes the structure of a biological membrane? two layers of phospholipids with proteins either crossing the layers or on the surface of the layers explanation:
the cell membrane is composed of two layers of phospholipid chains and is called the phospholipid bilayer. 2 people found this useful. Edit. Share to: 1  The Five Major Parts of the Brain At its most basic, the brain controls the body.onfidence votes 526. The layers are made up of lipids. These have a water loving head and a water hating tail. The membrane kind of looks like this: O==O In the cell membrane the water hating tails face each other.