There are 20 different amino acids. What makes one amino acid different from another?
A)different carboxyl groups attached to an alpha (α)carbon
B)different amino groups attached to an alpha (α)carbon
C)different side chains (R groups)attached to an alpha (α)carbon
D)different alpha (α)carbons
E)different asymmetric carbons

Question

Quizplus · Accepted Answer

The side chains or R groups attached to the alpha (α) carbon are what make each amino acid different. The R group can vary in size, shape, and chemical properties, resulting in 20 different amino acids with unique characteristics.

There Are 20 Different Amino Acids