How Many Different Amino Acids Can Be Used in the Composition

Question

How many different amino acids can be used in the composition of proteins?
A) 5
B) 10
C) 15
D) 20
E) 30

Accepted Answer

There are 20 different amino acids that are used in the composition of proteins. These amino acids have different side chains, which determine their unique properties and functions in protein structure and function.