Biology Pages
Kimball's Biology Pages: Enzymes
This is a good page for explaining the development and function of enzymes. It includes links to help with the chemistry and the biology that comes up.
University of Tulsa
University of Tulsa: Cell Energetics
This is the index page for a slide series on cell energetics. Among the topics covered in the series is the role of enzymes in the metabolic process. Use the topic list to go straight to any slide.
Other
University of Akron: General, Organic, and Biochemistry: Enzymes [Pdf]
Slideshow notes introduce enzymes: their purpose, process, and importance.