Guanine is used as a building block for what macromolecule?

Nucleic acids

Explanation:

Nucleic acids are made up of monomers called, nucleotides. These nucleotides are made up of five bases attached to a 5-cabon sugar and phosphate. The five bases that make up nucleotides are guanine, cytosine, adenine, thymine, and uracil.

Nucleic acids are the building blocks of every living thing. An example of a nucleic acid, is DNA or deoxyribonucleic acid. Another would be RNA or ribonucleic acid.

nucleic acid molecules are incredibly complex, containing the code that guarantees the four different nucleotide units comprise dna, the nucleic acid of interest to the genealogist. and one of four nitrogen-containing molecules called nucleotides

i think its y= -4x-14