The Following Question(s) Are Based on the 15 Molecules Illustrated

Multiple Choice

The following question(s) are based on the 15 molecules illustrated in the accompanying figure. Each molecule may be used once, more than once, or not at all.
-Which of the following molecules is an amino acid with a hydrophobic R-group or side chain?

A) 3
B) 7
C) 10
D) 12
E) 13