Random amino acids display Version 1.0

Quickly learn all the 20 essential amino acids. At the first click you'll be asked to draw an amino acid given it's name. At the second click it will show you its structure so you can see if you did good!
This product is very very simple. I built it myself because I needed to learn the amino acids by heart and it worked great :)
Amino acid are in their standard "zwitterionic" representation, from the famous Lehninger's Principles of Biochemistry.