Q:

Are DNA and RNA polymers composed of monomers?

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Quick Answer

Both DNA and RNA polymers are composed of monomers. These monomers are called nucleotides. A nucleotide has four parts; however, the monomers of DNA and RNA differ slightly from each other, thus giving the molecules different structures and functions.

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Full Answer

A nucleotide comprises a phosphate group, a five-carbon sugar and a nitrogenous base. The five-carbon sugar in DNA is deoxyribose whereas the sugar in RNA is ribose. Four different nitrogenous bases make up DNA and RNA, but the bases differ slightly. In DNA, the bases are adenine, thymine, cytosine and guanine; in RNA, the bases are the same except that uracil replaces thymine. Adenine and guanine are called purines; thymine, cytosine and uracil are pyrimidines.

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    How do you compare and contrast DNA and RNA?

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    DNA and RNA are somewhat similar organic molecules, both involved in the storage and transfer of genetic information. According to About.com, DNA’s primary function is to store genetic information over the long term, while RNA’s primary function is to transfer this information to the ribosomes, where proteins are made. Because they perform different functions, they have different structures, chemistry and characteristics.

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    What is DNA and RNA?

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    DNA and RNA are nucleic acids, which are also considered polymers. Deoxyribonucleic acid is used to create ribonucleic acid that, in turn, contains the primary sequence of amino acids needed to make proteins.

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    What are subunits of DNA and RNA called?

    A:

    The subunits of DNA and RNA are nucleotides. A nucleotide is made up of a phosphate group bonded to a sugar, which is then bound to a nitrogenous base. Both DNA and RNA consist of four types of nitrogenous bases.

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