This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology (General Propeies, DNA Viruses), Subject name: Microbiology
Which of the following does not possess both DNA and RNA: 
Select and explain. 
A. Bacteria, B. Fungus, C. Virus, D. Spirochete.
C: Virus
Answer: C: Virus 
Explanation: VIRUS contain a single type of nucleic acid, i.e., either DNA or RNA, but not both. Bacteria and fungi contain both DNA and RNA. Spirochetes are bacteria.