Which of the following are accurate statements concerning the differences between DNA and RNA?

well, you didnt give any choices, but the only difference between DNA and RNA is that in DNA molecules, there are 4 nitrogen bases (Thymine, Adenine, Guanine, and Cytosine). in the RNA molecule, the thymine is replaced with a substance called uracil. this prevents other DNA molecules from bonding, thus making it a single helix, not a double helix like DNA