This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
[{'content': 'All the following receptors belong to the steroid receptor superfamily, EXCEPT: \nSelect and explain. \nA. Thyroid receptor, B. Retinoid receptor, C. Vitamin D3 receptor, D. Epinephrine receptor', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Adrenergic receptors (epinephrine and norepinephrine) are membrane bound G-protein coupled receptors and does not belong to steroid receptors. Adrenaline binds to cell membrane receptors alter intracellular cAMP concentration, alter protein kinase A and regulate cell function. Ref: Essentials of Medical Pharmacology By K D Tripathi, 5th Edition, Pages 213-4 ; Vitamins and Hormones By Gerald Litwack, Volume 55, Page 131', 'role': 'assistant'}]