Biology Pages
Kimball's Biology Pages: Antibacterial Agents
This site lists the different antibiotics, tells how they disrupt the life cycle of the bacteria, and give examples of where in nature the antibiotic is from- i.e., penicillin -> bread mold.
Mayo Clinic
Mayo Clinic: Heart Healthy Foods
Resource provides great information on the topic of heart healthy foods. The site is fairly in-depth with links scattered throughout for additional information on related subjects.