MODEL 1: Polymerization & Primary Structure (10 pts) H ** с с н H o H H !!! HEN + H N - H,N* ----C-N CH, CH сн. CH, HO H

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MODEL 1: Polymerization & Primary Structure (10 pts) H ** с с н H o H H !!! HEN + H N - H,N* ----C-N CH, CH сн. CH, HO H2O сн. 1. In one sentence, summarize what is happening in the reaction above. (1 pt) CH HO a. Circle and label the new covalent peptide bond formed between the two amino acids (1 pt). b. Does a peptide bond involve the amino acid backbone or side chains? (Circle one. 1 pt) c. Amino acids joined together via peptide bonds within a polypeptide chain are referred to as "residues." Draw a square around each amino acid residue in the dipeptide. (1 pt) d. Label the "N-terminus" and the "C-terminus" of the dipeptide. (1 pt) 2. The addition (polymerization) of amino acid monomers is directional, with new amino acids added ONLY onto the C-terminus of the growing polypeptide chain. a. Draw a tripeptide by adding a charged amino acid (see your book) onto the dipeptide above.(1 pt)