Question

There are 31 known amino acids, with small variances to make them unique
True or False

Answer 1

False. There are 20 standard amino acids that are commonly found in proteins. These amino acids are unique due to their side chains, which vary in structure and properties. While there are other amino acids and variations (including modified or non-standard amino acids that can be found in some proteins or in specific organisms), the canonical set consists of 20 primary amino acids.