Answer:proton
For our purposes at this point in the text, we can define an acid. as a substance with at least one hydrogen atom that can dissociate to form an anion and an H + ion (a proton) in aqueous solution, thereby forming an acidic solution.
Explanation: hope it helps!
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Its a nucleotide.
This is the answer because they are the basic units of nucleic acids. These nucleotides are made up of a pentose sugar, a nitrogenous base, and a phosphate group.