Final answer:
Nucleic acids are polymers made up of repeating units called nucleotides, with DNA's structural unit being the nucleotide.
Explanation:
Nucleic acids are polymers composed of monomers called nucleotides. These nucleotides consist of a five-carbon sugar, a nitrogen-rich base, and a phosphate group. In the case of DNA, the repeating structural unit is the nucleotide, which forms the polymer chain of DNA.
Learn more about DNA structure and nucleotides here:
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