AIIMS November 2011 – MCQ 105

Adrenaline, noradrenaline and dopamine act through?
A. Two pass receptor
B. Ligand gated channel
C. Seven pass receptor
D. One pass receptor

(Repeat question – AIIMS Nov 06 – AA q12)

Correct answer: C. Seven pass receptor

Catecholamines act through G protein coupled receptors which belong the the family of seven pass transmembrane protein receptors. They are also known as serpentine receptors.