Which system of classification should be used? 5-Kingdom system

1. Which system of classification should be used? • 5-Kingdom system • - All Prokaryotes grouped in Kingdom Monera • - Eukaryotes grouped in separate Kingdoms • 6-15 Kingdom system • Prokaryotes divided among 2-3 separate Kingdoms • Protists divided among many Kingdoms

2. Figure 27.2 The three domains of life

3. Prokaryotes • earliest known organisms • 3.5 BYA • They’re (almost) • Everywhere! • + incomparably • bountiful and • omnipresent • + hot, cold, salty, • acidic, alkaline

4. Figure 27.3 The most common shapes of prokaryotes

5. Figure 27.4x2 Prokaryotes and eukaryotic cell

6. Figure 27.5 Gram-positive and gram-negative bacteria

7. Figure 27.5x Gram-positive and gram-negative bacteria

8. Figure 27.6 Pili

9. Figure 27.x1 Prokaryotic flagella

10. Figure 27.x2 Prokaryotic flagella (A.serpens)

11. Figure 27.x3 Prokaryotic flagella (Bacillus)

12. Figure 27.9 Prokaryote colonies in culture

13. Figure 27.10 An anthrax endospore

14. Figure 27.10x Endospores

15. Figure 27.x1 Prokaryotic conjugation

16. Table 27.1 Major Nutritional Modes

17. Figure 27.11 One of the most independent organisms on earth: Cyanobacteria (Anabaena)

18. Figure 27.11x1 Cyanobacteria: Gloeothece (top left), Nostoc (top right), Calothrix (bottom left), Fischerella (bottom right)

19. Figure 27.11x2 A bloom of cyanobacteria