Which of the Following Supports the Ligand-Mediated Model of Receptor

question 62

Multiple Choice

Which of the following supports the ligand-mediated model of receptor dimerization?

• A)Some growth and differentiation factors like PDGF or CSF-1 are composed of two similar or identical disulfide-linked subunits,each of which has a binding site for a receptor.
• B)Ligands have been found to be small proteins.
• C)Ligands have been found to be steroid hormones.
• D)Ligands were found to bind to each other
• E)Receptors have been shown to have multiple binding sites for ligands.

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