1. Draw the structures of the carboxylic acid and the amine from which each of the following amides could be formed. (1 pt) 2. Classify each of the following as a primary, secondary, or tertiary amine. (2 pts) a. b. 3. In what biological molecule are quaternary ammoniums typically found? ( 1pt) 4. Circle the heterocyclic amine ring system or systems present in each of the following substances by circling them: (2 pts) a. caffeine b. 5. Draw the structures of the compounds missing in each of the following reactions: ( 2pts) a. H3CNHCH3+ ? b