Which of the Following Statements Concerning the Plasma Membrane Is

question 5

Multiple Choice

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

• A) the plasma membrane appears as a trilaminar structure under a light microscope.
• 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 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.
• E) the plasma membrane is impermeable to any substance that is not lipid soluble or is greater than 0.8 nm in diameter.

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