This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'Agonist is having \nSelect and explain. \nA. Affinity with intrinsic activity 0, B. Affinity with intrinsic activity 1, C. Affinity with intrinsic activity -1, D. None', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ref-KDT 6/e p41 Agonist have intrinsic acriacti 1 because Intrinsic activity is a measure of the ability of a drug that is bound to the receptor to generate an activating stimulus and produce a change in cellular activity. Both agonists and antagonists can bind to a receptor. However, only agonist molecules can activate the receptor.', 'role': 'assistant'}]