Open Oregon Educational Resources
General Biology II: Survey of Molecular Life and Genetics (Mt. Hood Community College Biology 102)
What could be more real life than a biology course? Mt. Hood Community College offers a complete biology textbook with an emphasis on genetics. Topics range from DNA replication to biotechnology and inheritance patterns.
Other
Hypertextbook: Large Molecules
This is a good, in-depth reference for the study of macromolecules in biology - lipids, proteins and carbohydrates. Includes images and links to other sources as well as a quiz for students to check understanding.