Lab Topic 14
Working with Bacterial Diversity

Three Bacterial Cell Shapes

Cocci Shape (100x oil immersion)
Bacilli Shape (100x oil immersion)
Spirilla Shape (100x oil immersion)
Student plates showing different types of bacterial growth.
 
Using Figure 14.7 in the lab manual, what descriptive terms would you use to characterize the colonies viewed in each plate?

 

Cyanobacteria
(Once called blue green algae before prokaryotic cell structure was determined.)
Sometimes in a filament of Anabaena cells, you will see one that is different. Can you locate the heterocyst in this image? It has a metabolism that allows it to fix nitrogen. (need new image)
HOME PAGE