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1. Receptors:
Answer
-Part of the cell that is exposed to the outside environment
-Causes specific action in the cell when activated
-Lock and key mechanism
May interact with a cell or may not
2. Ligand:
Answer molecules that bind to a receptor
3. Agonist:
Answer
-a molecule that, by binding to a receptor site, stimulates a response
-Any chemical that reacts with the extracellular receptor to cause a physiologicchange in
the cell
4. Antagonist:
Answer
-Reacts with the receptor, but does not cause the physiologic changein the cell
-Reversal agent for drug overdoses
-Used to induce a biological response by blocking one pathway ("beta blockers")
5. Enzymes:
Answer
-Chemicals that cause degradation of other chemicals, but are notaffected by the reaction
-Main ones to know are the cytochrome P450 enzymes
6. Inducers:
Answer -rapid drug breakdown with rapid half-life
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