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: Forensic Medicine
[{'content': 'Cyanide poisoning acts by : \nSelect and explain. \nA. Inhibiting DNA synthesis, B. Inhibiting enzymes of proteins synthesis, C. Inhibiting cellular respiration, D. Inhibiting protein breakdown', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. Inhibit cellular respiration', 'role': 'assistant'}]