Shapes of bacteria

This presentation is all about the different shapes in bacteria. This can help you in determining shapes that you do in your experiments in Microbiology. Hope this can help. :-)

1. Prepared by clariza d. gruyal Shapes of bacteria

2. 3 shapes of bacteria Spherical – coccus (cocci-plural) Cylindrical – rod (bacilli, sing-bacillus) Helicoidal – spiral or curve

3. Spherical (cocci) Types of cocci: Diplocci Streptococci Staphylococci or micrococci

4. Spherical (Cocci) Diplococci Division is at the center but there is no complete separation of the 2 daughter cells.

5. diplococci D iplococcus Neisseria

6. Spherical (Cocci) Streptococcus I n chains, divide in only plane but does not separate division. Depending upon the species, the distalends of each pair may be lancet-shaped or flattened at the adjacent sides to resemble a coffee bean .

7. streptococcus

8. Spherical (Cocci) staphylococci In clusters, divide in two planes producing tetrads or clusters of bacteria resembling bunches of grapes.

9. staphylococci

10. Spherical (Cocci) Gaffkya or tetrads Cocci that divide in two planes and remain in groups of four.

11. Gaffkya or tetrads

12. Spherical (Cocci) sarcina Cocci that divide in three planes and remain attached in cubelike groups of eight.

13. sarcina

14. Bacilli Types of bacilli or rods: Large bacilli Cigarette-shape Fusiform bacilli Short rod bacilli

15. Large bacilli Proteus mirabilis

16. Cigarette-shape Bacillus cereus

17. Fusiform bacilli

18. Short rod bacilli Eschirichia coli

19. Helicoidal (spiral) Types of helicoidal (spiral): Rigid helicoidal species – their long axis remain rigid when in motion. Spirillum – coiled in several turns. Ex. Spirilum minus Vibrio – comma-shaped. Ex. Vibrio comma

20. spirillum Spirillum minus

21. Vibrio Vibrio comma

22. Helicoidal (spiral) Types of helicoidal (spiral): b. Flexible helicoidal bacteria – spiral organisms whose long axis bends when in motion. a. Spirochaetes

23. spirochaetes

24. OTHER SHAPES

25. Summary

26. Summary

27. Thank you! 