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: Microbiology
Which of the following is not a feature or propey of a virus? 
Select and explain. 
A. Heat labile, B. Antibiotic resistant, C. May contain both DNA and RNA, D. Forms extra cellular infectious paicle
C: May contain both DNA and RNA
Answer: C: May contain both DNA and RNA 
Explanation: Virus contains either RNA or DNA, not both, it is surrounded by a capsid composed of small protein units called capsomeres. Other specific propeies of viruses are : inability to replicate on their own, inability to divide by binarry fission, mitosis or meiosis, lack of genes and enzymes needed for energy production, depend on ribosomes, enzymes and metabolites of host cell for protein and nucleic acid production.