Complete the following vocabulary exercise relating to the level of structure in proteins. Match the words in the left-hand column with the appropriate blank in the sentences in the right-hand column. View Available Hint(s) Primary Secondary Tertiary Quaternary bonding between backbone atoms located near each other in the polypeptide chain. 2 3. structure describes the alpha-helices and beta-sheets that are formed by hydrogen Reset Help structure is the sequence of amino acids in a protein. structure is the result of two or more protein subunits assembling to form a larger, biologically active protein complex. structure is achieved when a protein folds into a compact, three-dimensional shape Pearson