Critical Thinking: 

1. A researcher      received two samples: one of a virus and the other of a viroid. Unfortunately, the labels were lost.      Scientist felt that it could be distinguished the two by analyzing the      presence or absence of a single molecule. What molecule would be searching      for and why?

If you were      asked to name one scientist mentioned in this lecture/chapter for the      Nobel Prize award, who would it be? Make a statement supporting your      choice.