Question
a.
Decrease in concentration of certain intracellular signal molecules called second messengers
b.
Increase in concentration of certain intracellular signal molecules called second messengers
c.
Decrease in concentration of certain extracellular signal molecules called first messengers
d.
Increase in concentration of certain extracellular signal molecules called first messengers
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Q. The binding of ligands to many GPCRs leads to ___________
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