Biofilm

1. Describe how most scientists thought bacteria lived, before biofilms were discovered?  Describe how bacteria living in a “biofilm” are different from how we used to think about how bacteria lived?

2. In what ways can a biofilm help a bacteria be less susceptible to antibiotics? Where are some common examples of biofilms in a clinical (medical) setting?

3. How is it that completely harmless bacteria attaching to a person’s teeth can lead to dental carries (cavities)?