Which Statement About the Plasma Membrane Is True

question 23

Multiple Choice

Which statement about the plasma membrane is true?

• A)It appears trilaminar under a light microscope.
• B)Its glycocalyx serves as receptor sites for binding chemical messengers in the ECF.
• C)It is impermeable to lipid-soluble substances.
• D)Some of its carriers transport ions.
• E)Its channels are impermeable to any substance smaller than 0.8 nm in diameter.

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are variables in an experiment that are manipulated or controlled by the experimenter to investigate their effect on dependent variables.