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 of the following hormones have cell surface receptors except - \nSelect and explain. \nA. Adrenaline, B. Growth Hormone, C. Insulin, D. Thyroxine', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Thyroxine o Thyroxine acts on intracellular receptors.", 'role': 'assistant'}]