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: Biochemistry
[{'content': 'Circular DNA, found in eukaryote cells are found in all, EXCEPT: \nSelect and explain. \nA. Nuclear, B. Plasmid, C. Mitochondrial, D. Yeast', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Circular DNA are occasionally found in eukaryotic cells, including plasmids such as the 2u circle of yeast. Mitochondria and chloroplasts also contain their own genomes, or replicons, which are circular molecules of self-replicating DNA.', 'role': 'assistant'}]