Question

the building blocks of nucleic acids are ____. amino acids fatty acids sugars nitrogenous bases ions

Explanation:

Nucleic acids like DNA and RNA are composed of nucleotides. Nucleotides consist of a sugar, a phosphate group, and a nitrogen - containing base. So the building blocks are nucleotides which include nitrogenous bases among other components. Amino acids are building blocks of proteins, fatty acids are part of lipids, sugars alone are not the building blocks of nucleic acids, and ions are not the building blocks of nucleic acids.

Answer:

nitrogenous bases