What is the primary structure of an amino acid is based upon?

The primary structure of an amino acid is based upon its unique sequence of amino acids linked together by peptide bonds. This sequence is determined by the genetic code and dictates the protein's characteristics and functions. Each amino acid consists of a central carbon atom, an amino group, a carboxyl group, a hydrogen atom, and a variable side chain (R group) that differentiates one amino acid from another. The specific order of these amino acids forms the foundation for higher levels of protein structure.