Question

what are the building blocks of proteins called? rna codons amino acids nitrogen bases

Explanation:

Proteins are macromolecules. Amino acids are the basic units that link together through peptide bonds to form polypeptide chains, which then fold into functional proteins. RNA is involved in protein synthesis but is not the building block. Codons are sequences on mRNA that code for amino acids. Nitrogen bases are part of nucleic acids (like DNA and RNA), not proteins.

Answer:

C. Amino acids