The Following Questions Are Based on the 15 Molecules Illustrated

Multiple Choice

The following questions 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 act as building blocks (monomers) of polypeptides?

A) 1, 4, and 6
B) 2, 7, and 8
C) 7, 8, and 13
D) 11, 12, and 13
E) 12, 13, and 15