General, Organic and Biochemistry. The site below contains excellent animations pertaining to topics covered in Chemistry 301.
http://ull.chemistry.uakron.edu/genobc/.

The Biology Project: Biochemistry. See the site below for information about metabolic pathways, and for problems to solve.
http://www.biology.arizona.edu/biochemistry/biochemistry.html.

Instructional Biochemistry Site at UCSB. This site provides tutorial on amino acids, enzyme kinematics and nucleic acids.
http://tutor.lscf.ucsb.edu/instdev/sears/biochemistry/.

PubMed. This site provides citations from medical biology journals, including full text articles.
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi.

LabWork: Henrietta Lacks. This site provides a description of the isolation of the “immortal” HeLa cells.
http://www-micro.msb.le.ac.uk/LabWork/lacks/lacks1.htm.

Enzyme Nomenclature Database.
http://expasy.org/enzyme/.