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Cell-Surface and Intracellular Receptors
Grade Level
AP Biology
APB.214 Cell-Surface and Intracellular Receptors
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A membrane-impermeant inhibitor blocks the response to ligand A but not ligand B. Ligand A is charged; ligand B is nonpolar and detected in the cytosol. Which comparison is best?
A
Ligand A likely binds an intracellular receptor, while ligand B likely binds a plasma-membrane receptor.
B
Both ligands likely bind plasma-membrane receptors because both are inhibited from outside.
C
Both ligands likely bind intracellular receptors because both cause cellular responses.
D
Ligand A likely binds a plasma-membrane receptor, while ligand B likely binds an intracellular receptor.
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