Question

Most simple amino acid is

• A. Tyrosine
• B. Lysine
• C. Glycine
• D. Aspartic acids

Answer 1

The correct option is C Glycine

• Proteins are polymers formed of amino acids. The amino acids are compounds in which the amino group, carboxylic group, variable group, and a hydrogen atom are bound to the same $\alpha$-carbon atom.
• The different amino acids differ in the variable group. The simplest amino acid is glycine in which the variable group is a hydrogen atom.
• As two hydrogen atoms are bound to $\alpha$-carbon atoms, the $\alpha$-carbon is not asymmetric in glycine.
  Hence, option C is correct.