What is the term for a drug that binds to a receptor and activates it?

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Multiple Choice

What is the term for a drug that binds to a receptor and activates it?

Explanation:
Activating a receptor after binding is the role of an agonist. In pharmacology, ligands can have efficacy: an agonist stabilizes the receptor in its active form, triggering the downstream signaling cascade. A full agonist produces the maximal possible response, while a partial agonist activates but yields a submaximal response even when all receptors are occupied. An antagonist binds the receptor without activating it, blocking other ligands from binding. An inverse agonist binds and reduces any constitutive (basal) activity of the receptor. So the term for a drug that binds to a receptor and activates it is an agonist.

Activating a receptor after binding is the role of an agonist. In pharmacology, ligands can have efficacy: an agonist stabilizes the receptor in its active form, triggering the downstream signaling cascade. A full agonist produces the maximal possible response, while a partial agonist activates but yields a submaximal response even when all receptors are occupied. An antagonist binds the receptor without activating it, blocking other ligands from binding. An inverse agonist binds and reduces any constitutive (basal) activity of the receptor. So the term for a drug that binds to a receptor and activates it is an agonist.

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