Study the functional groups of the amino acids in Table 4-1 and devise a Venn diagram showing amino acids in the following categories: nonpolar, polar, negatively charged, positively charged, aliphatic, small R groups, and bulky R groups. In a Venn diagram, objects with a given common property are enclosed by an oval. A set of objects may have several fully or partially overlapping ovals that represent different properties or the ovals may not overlap.