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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:
Primary structure of a biomolecule is the exact specification of its atomic composition and and the chemical bonds connecting the atoms. Secondary structure of the biomolecule is the three-dimensional form of biopolymers, secondary structure is defined by the hydroge n bonds of the biomolecules. Tertiary structure of the biomolecule is the three-dimensional structure,defined by its atomic coordinates, by the formation of h ydrogen, ionic or sulphide bonds.