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University of Arizona
The Biology Project: The Chemistry of Amino Acids
A great site for understanding Amino Acids, the building blocks for protein. Besides a very complete summary, the site includes a complete list of amino acids, a link to basic amino acid structure, a list if atoms in amino acids, and...
Palomar Community College District
Wayne's Word: The Castor Bean: Plant Named After a Tick
A fascinating article on the natural history and biochemistry of castor oil. There are sections that are basic and descriptive as well as more technical information.