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BiologyGenetics

Monomer of Nucleic Acids: Which Building Block Is Correct?

Identify the monomer of nucleic acids as a nucleotide. Compare the four choices and distinguish nucleotides, nucleosides, bases, and backbone linkages.

Question

The building blocks of nucleic acids are ________.

A. sugars B. nitrogenous bases C. peptides D. nucleotides

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Evidence boundary

This page answers the cited single building-block review item with its original four options. The explanation uses standard DNA/RNA terminology and distinguishes free nucleotides from the nucleotide residues incorporated into a polymer. The question does not request a molecular drawing, sequence, or laboratory measurement.