Final answer:
A nucleic acid building block is called a nucleotide. Nucleotides are the monomers that make up DNA and RNA.
Step-by-step explanation:
A nucleic acid building block is called a nucleotide. Nucleotides are the monomers or building blocks that make up nucleic acids, such as DNA and RNA. Each nucleotide consists of a sugar molecule, a phosphate group, and a nitrogenous base. The sequence of nucleotides in a nucleic acid determines the genetic information carried by that molecule.
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