This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Metabolism of carbohydrate, Subject name: Biochemistry
[{'content': 'Cytochrome Oxidase is a \nSelect and explain. \nA. Hemoprotein, B. Flavin mononucleotide, C. Flavin adenine dinucleotide, D. flavin adenine trinucleotide', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Cytochrome oxidase is a hemoprotein widely distributed in many tissues, having the typical heme prosthetic group present in myoglobin, hemoglobin, and other cytochromes.Ref: Harper Biochemistry; 30th edition; Chapter 12; Biologic Oxidation', 'role': 'assistant'}]