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. P R E P A R E D B Y C L A R I Z A D . G R UY A L
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:
a. Diplocci
b. Streptococci
c. 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
Diplococcus Neisseria

6. SPHERICAL (COCCI)
Streptococcus
In 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:
a. Large bacilli
b. Cigarette-shape
c. Fusiform bacilli
d. 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):
a. Rigid helicoidal species – their long axis remain
rigid when in motion.
a. Spirillum – coiled in several turns. Ex. Spirilum
minus
b. 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!