A chain of peptide containing linear sequences of amino acid linked by peptide bonds best represent the

The primary structure of a protein is defined as the linear sequence of amino acids linked together by peptide bonds. This is the most basic level of protein structure. The secondary structure refers to local folded structures like alpha-helices and beta-pleated sheets stabilized by hydrogen bonds. The tertiary structure is the overall three-dimensional shape of a single polypeptide chain formed by interactions among side chains. The quaternary structure involves the assembly of multiple polypeptide subunits. Since the question describes a linear sequence of amino acids linked by peptide bonds, this matches the definition of primary structure.