What drug acts as an inhibitor to activity by the protein receptor?
1. Agonist
2. Antagonist
3. Therapeutic
4. Partial agonist
Answer: 2
Explanation: An antagonist (inhibitor, blocker) causes there to be no chemical action at the cell site. Agonists activate the protein receptor on the cell site. Therapeutic drugs are those that have a positive clinical effect. Partial agonists elicit only a partial biologic response.
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