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What are the main differences between DNA and RNA?

April 26, 2017Biology differences dna main Mathematics RNA

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What are the main differences between DNA and RNA?

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There is no ribose sugar in DNA. In RNA the Nitrogenous base Adenine is switched with Uracil. RNA is single stranded DNA contains a chemical code or message which must be transcribed Both DNA and RNA are composed of repeating units of nucleotides. Each nucleotide consists of a sugar, a phosphate and a nucleic acid base.The sugar in DNA is deoxyribose. The sugar in RNA is ribose, the same as deoxyribose but with one more OH (oxygen-hydrogen atom combination called a hydroxyl). This is the biggest difference between DNA and RNA. Another difference is that RNA molecules can have a much greater variety of nucleic acid bases. DNA has mostly just 4 different bases with a few extra occasionally. The difference in these bases (between DNA and RNA) allows RNA molecules to assume a wide variety of shapes and also many different functions. DNA, on the other hand, serves as a set of direction.