Question

The 20 different amino acids found in polypeptides exhibit different chemical and physical properties because of different __________.

Answer 1

side chains or groups

Step-by-step explanation:

The side groups are what make each amino acid different from the others. Of the 20 side groups or polypeptides, there are two main groups: polar and non-polar. These names refer to the way the side groups, sometimes called "R" groups, interact with the environment which is why they are different