The following questions are based on the 15 molecules illustrated in the figure below.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