Adrenaline, noradrenaline and dopamine act through?: (A) Two pass receptor, (B) Ligand gated channel, (C) Seven pass receptor, (D) One pass receptor
Answer is C. Ans is 'c' i.e. Seven pass receptor o Adrenergic receptors (Adrenaline, noradrenaline) and dopamine receptors are G-protein coupled receptors which are heptahelical receptors, i.e., have seven transmembrane spanning segments (Seven pass receptors)