8. Select the correct definition of agonist and antagonist: a) An agonist activates the receptor. An antagonist produces an effect opposite to that of an agonist. b) An agonist partially activates the receptor. An antagonist blocks activation of the receptor. c) An agonist partially activates the receptor. An antagonist produces an effect opposite to that of an agonist. d) An agonist activates the receptor. An antagonist blocks activation of the receptor.

8. Select the correct definition of agonist and antagonist: a) An agonist activates the receptor. An antagonist produces an effect opposite to that of an agonist. b) An agonist partially activates the receptor. An antagonist blocks activation of the receptor. c) An agonist partially activates the receptor. An antagonist produces an effect opposite to that of an agonist. d) An agonist activates the receptor. An antagonist blocks activation of the receptor.

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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1) A drug that binds at the same site as the neurotransmitter and prevents the neurotransmitter from opening ion channels would be termed a(n) a) direct antagonist b) direct agonist c) indirect agonist d) indirect antagonist 2) A drug that binds at a site different from that of the neurotransmitter and opens ion channels would be termed a(n) a) direct antagonist b) direct agonist c) indirect agonist d) indirect antagonist
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