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Best Answer: 4) RNA contains ribose, DNA does not. DNA contain the deoxyribose sugar. Other differences may include; DNA is double stranded while RNA is single stranded. DNA contain the base thymine while RNA contain the base Uracil in place of thymine.
While the sugar present in a RNA molecule is ribose, the sugar present in a molecule of DNA is deoxyribose. Deoxyribose is the same as ribose, except that the former has one more OH. DNA does not usually exist as a single molecule, but instead as a tightly-associated pair of molecules.he four bases found in DNA are adenine (abbreviated A), cytosine (C), guanine (G) and thymine (T). A fifth pyrimidine base, called uracil (U), usually takes the place of thymine in RNA and differs from thymine by lacking a methyl group on its ring.