- Study guides, Class notes & Summaries

How many commonly occurring amino acids are there? correct answers There are 20 commonly occurring amino acids that are used for synthesis of proteins in all living systems What do amino acids contain? correct answers Amino acids contain an alpha-carboxyl group, an alpha-amino group and a distinctive R group substituted on the alpha-carbon What part of amino acids contribute to stereoisomeric forms? correct answers The alpha carbon of all amino acids except glycine is asymmetric and thus a...