1. Do Now: Use your notes and hw 1.What are the 3 shapes of bacteria? 2.What is the function of the capsule? 3.What is a nucleoid?

2. Where do we find bacteria?

3. Review What is a prokaryote? –Cells without membrane bound nucleus –Most surrounded by a cell wall –Many secrete a slime capsule- protection –Lack organelles

4. How big is a prokaryotic cell? 1-5 micrometers A micrometer, also written µm, is one thousandth of a millimeter - it's 10 -6 m.

5. Classification of Prokaryotes Eubacteria –Surrounded by a cell wall containing peptidoglycan Example: Rhizobium

6. Classification of Prokartyotes Archaebacteria –Surrounded by a cell wall lacking peptidoglycan Example: Methanogen

7. How do we identify Prokaryotes? 1.Shape Three groups: 1.Coccus: spherical 2.Bacillus: rod shaped 3.Spirillum: spiral

8. Motility Flagella Slime secretion Spiral motion

9. Obtaining energy Autotroph –Makes own food Heterotroph –Ingests nutrients

10. 1.photoautotroph Carry on photosynthesis

11. 2. chemoautotroph Gain energy from inorganic molecules

12. 3. Photoheterotrophs Photosynthesis AND ingestion of organic compounds

13. Obligate aerobes –Require oxygen Obligate anaerobes –Must live in the absence of oxygen Facultative anaerobes –Can live with or without oxygen

14. Lets draw

15. Exit ticket What are the three types of movement for bacteria cells? Give an example of Eubacteria. Give an example of Archaebacteria. What are the three different ways bacteria can obtain energy?