Which of the Following Statements Concerning Receptor Enzymes Is Correct

question 56

Multiple Choice

Which of the following statements concerning receptor enzymes is correct?

• A)They are not usually membrane-associated proteins.
• B)They contain an enzyme activity that acts on a cytosolic substrate.
• C)They contain an enzyme activity that acts on the extracellular ligand.
• D)They have a ligand-binding site on the cytosolic side of the membrane.
• E)They have an active site on the extracellular side of the membrane.

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