Following its initial activation, how does a G protein become inactivated?
a. It spontaneously losesactivity within a few seconds.
b. The G-proteinα subunitcontaining a GTP eventually reassociates with the G-proteinβ/γ dimer.
c. The G-proteinα subunit ishydrolyzed to GDP allowing reassociation of the G-protein αsubunit and β/γ dimer.
d. The receptor becomesinternalized.
e. The G-proteinα subunit isdigested and recycled.