Bacteria shape can be identified under the microscope.

Following two examples of cell shapes:

• Saccharomyces cerevisiae:大,球形,椭圆形出芽类酵母菌cells.

• Lactobacillus: Gram positive rod.

Morphology identification is not very specific, related organisms often look almost the same. To be more specific you can use a series ofbiochemical teststo identify metabolic properties of the microorganism.