MicroVision 
 
COCCI
Bacteria that are spherical in shape are classified as coccus (singular) or cocci (plural).  Four examples of cocci are shown here at 1000 X magnification: Staphylococcus , Micrococcus , Streptococcus and Sarcina. Staphylococcus and Micrococcus tend to form grapelike clusters, while Streptococcus aligns in chains.  Sarcina divides into three planes, forming eight cells arranged in a cube.  In the two-dimensional views shown here only the front four cells are visible, appearing as four cocci aligned in a cube (a tetrad).

 

Click on each image to see the enlarged version.

1. Staphylococcus  2.  Staphylococcus 3. Micrococcus 4. Micrococcus 5. Streptococcus
6. Streptococcus 7.  Streptococcus 8.  Sarcina 9. Sarcina 10.  Sarcina
 

 
© 1998