American Institute of Biological Sciences
Action Bioscience: Bacteria: More Than Pathogens
An explanation of the differences between bacteria and viruses. Further details are given showing that not all bacteria are bad.
CK-12 Foundation
Ck 12: Life Science: Helpful Bacteria
[Free Registration/Login may be required to access all resource tools.] Can we survive without bacteria? Could bacteria survive without us? Learn more about helpful bacteria in this learning module produced by CK-12.
BiologyWise
Biology Wise: The Names and Functions of Beneficial Bacteria
Discusses the different types of bacteria with probiotic properties that are beneficial to humans' health. Also discusses bacteria that benefit water, soil, and plants.