Which of the Following Statements Concerning the Plasma Membrane Is

question 193

Multiple Choice

Which of the following statements concerning the plasma membrane is correct?

• A)Under a light microscope, the plasma membrane appears as a trilaminar structure.
• B)The carbohydrates on the outer surface of the membrane serve as receptor sites for binding chemical messengers in the environment of the cell.
• C) The lipid bilayer serves as a barrier to the passage of H₂O-soluble substances through the membrane.
• D) Carrier proteins shuttle back and forth across the membrane as they carry passenger molecules from one side to the other.

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