the primary structure of a protein refers to the sequence of amino acids that are linked together in a long chain which oft he following common items would best represent the primary structure of a protein?

In a primary structure of protein the smaller subunits amino acids are linked by peptide bonds. The peptide bond is formed when carboxyl or C=O. The long string of bead represents differentamino acids formed in the ribosome

weathering is the answer.

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.