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

the pic attached shows the stages of mitosis. hope it !