<prompt> Adrenaline, noradrenaline and dopamine act through?Two pass receptorLigand gated channelSeven pass receptorOne pass receptor  <response>: 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 