The following statements are true regarding drug receptors
(a)
they are found only in cell membranes
(b)
drug receptor activity is always G-protein-coupled
(c)
the concentration of receptors in the cell membranes is dynamic
(d)
GABA receptors are ligand-gated ion channels
(e)
competitive antagonists bind reversibly to the receptors
(a) false (b)
false (c)
true (d)
true (e)
true
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