Solved 4) Extraterrestrial Amino Acids
Are all amino acids zwitterions? - Quora
File:Beta alanine comparison.svg - Wikipedia
Alanine transaminase - Wikipedia
Glucogenic amino acid - Wikipedia
The simplest of all amino acids, which amino acid is represented by this R group (A=amino acid backbone): A-H? - Quora
Amino acid synthesis - Wikipedia
Amino acid - Wikipedia
Tyrosine - wikidoc
D-PANTOTHENIC ACID, C9H17NO5