Below is an image of two amino acids forming a dipeptide. In the dipeptide, the two amino acids are combined through a peptide bond. a. Circle the a carbon in each of these amino acids. b. Now find the variable group. For amino acid 1, the variable group is polar or nonpolar? Ho но +H For amino acid 2, the variable group is polar or nonpolar? c. What functional group is formed when the dipeptide forms (look back at your functional group page from the Chemistry Discussion)? H-N-C-C. CH ₂ OH H *H_ H 0 CH₂ OH + ↓ H-N-C-C. но | || H-NIC-C-N-C-C H но | || N-C-0-0- H CH3 CH3 0 + HOH

1a. Describe the formation of a bond between two amino acids that craves a peptide. 1B. The image below is a dipeptide. How can you always identified the peptide bond between amino acids?

Researchers discover a new amino acid. Its R-group exclusively has hydrogen and carbon atoms. What behavior will this amino acid show? O Relative to the amino acids found in organisms, its interactions with water will be very high. It is hydrophilic. Relative to the amino acids found in organisms, its interactions with water will be intermediate. It is hydrophobic.

acids Identify which of the following are a-amino acids. CH₁ H₂N-C-COOH a. CH₁ H b. H₂N-C-CH₂-COOH 1 CH, H c. H₂N-CH₂-C-COOH H 1 d. H₂N-C-COOH CH₂CH,