1. Plate 11 Bacterial Shapes

2. Bacillus Bacillus = rod 0.5-20 µm in length

3. Rectangle-Shaped Bacilli Bacillus anthracis (anthrax) bacteria is rectangular in shape

4. Club-shaped Bacilli Cornybacterim diphtheria (diptheria) bacteria is club-shaped

5. Swollen-Shaped Bacilli Clostridium tetani (tetnus) bacteria is club shape w/ spore at end

6. Strepto Bacilli Strepto means that the bacteria are linked end-to-end in a chain Rat bite fever is an example

7. Spores in bacilli Photomicrograph Drawing

8. Cocci Bacteria Cocci = sphere Small in diameter (usually 0.5µm)

9. Forms of Coccus Bacteria Diplo – 2 cells fused on one side Strepto – long chain Packet (sarcina) – group of 4 Staphylo – irregular group “grape like”

10. Diplococcus Diplo means “double” Neisseria gonorrhoeae (gonorrhea) is an example

11. Streptococcus Strepto = long chain “Strep Throat” is an example

12. Sarcina Coccus Sarcina = packet Micrococcus luteus is an example Found on human skin

13. Staphylococcus Staphylo = irregular shape Staphylococcus aureus is an example “Staph” infection

14. Spiral Bacteria Wave-like shape Average 15 µm long

15. Single Spiral Bacteria Vibrio – “comma like” Vibrio cholerae (cholera) is an example

16. Corkscrew and Flagellum Bacteria Spirillum = wave like w/ flagella Rat bite fever is an example

17. Corkscrew and No Flagellum Spirochete – flexible wall no flagella Treponema pallidum (syphilis) is an example

18. Leptospirilum

19. What is the practical value of knowing the bacteria’s form?