Significance of-R group in amino acid molecule

Question

Write down the significance of–R group (or variable radical) in the amino acid molecule?

Answer 1

The –R group , as well called lateral chain, it is the variable part of amino acid molecule. The –R group can be a multifaceted carbonic chain, substituting methyl group (or forming then amino acid alanine) or even only hydrogen (or forming glycine, simplest amino acid). Consequently the –R group is significant because it is the delineation factor of amino acids.