as more amino acid monomers are linked together, a long polypeptide chain forms. the polypeptide chain…

as more amino acid monomers are linked together, a long polypeptide chain forms. the polypeptide chain eventually becomes a protein.\nselect the polypeptide.
Answer
Brief Explanations:
A polypeptide is a chain of amino - acid monomers linked by peptide bonds. The first option is a dipeptide (two amino acids), the second is a single amino acid. The third option shows a long chain of amino acids linked together by peptide bonds, which is a polypeptide.
Answer:
The third structure (the long chain of amino - acid units linked by peptide bonds)