1. Bacteria Harmful or Helpful

2. What is a Bacterium Prokaryotic (vs. eukaryotic) Prokaryotic (vs. eukaryotic) Single-celled Single-celled Motile? Motile? Diverse Diverse

3. Where Do We Find Bacteria Every conceivable habitat on the planet Every conceivable habitat on the planet i.e. Rio Tinto- pH 2 i.e. Rio Tinto- pH 2

4. What do They Look Like Round (coccus) Round (coccus) Rod shaped (like E. coli) Rod shaped (like E. coli) Spirale (spirochete) Spirale (spirochete)

5. How do we Identify Between Different Bacteria Shape, size Shape, size Gram positive or gram negative Gram positive or gram negative Other biochemical methods Other biochemical methods

6. How do they move Some don’t, but others do Some don’t, but others do Flagella or axial filaments (internal) Flagella or axial filaments (internal)

7. Metabolism and Nutrition Obligate Anaerobes Obligate Anaerobes Oligate Aerobes Oligate Aerobes Falcultative Anaerobes Falcultative Anaerobes Energy and carbon through photosynthesis Energy and carbon through photosynthesis Energy through photosynthesis, carbon from elsewhere Energy through photosynthesis, carbon from elsewhere Energy through inorganic substances (use energy to fix carbon dioxide) Energy through inorganic substances (use energy to fix carbon dioxide) Energy and carbon from organic compounds Energy and carbon from organic compounds

8. Some prokaryotes live on and in other organisms Digestion Digestion Vitamin producers Vitamin producers Nitrogen fixation of Nitrogen fixation of plants plants Pathogens- Pathogens- Koch’s Postulate Koch’s Postulate

9. Why Do We Care About Bacteria In the Context of Hazardous Waste Experiment Time! Experiment Time!