Non-motile bacteria

If the bacteria are mobile, the line will appear diffuse and extend into the medium.

[1] The cell structures that provide the ability for locomotion are the cilia and flagella.

Coliform and Streptococci are examples of non-motile bacteria as are Klebsiella pneumoniae, and Yersinia pestis.

The ingredients include motility test medium, nutrient broth powder, NaCl and distilled water.

Bacteria that are motile grow away from the stab, and toward the sides and downward toward the bottom of the tube.

Motile and non-motile bacteria can be differentiated along the stab lines. Motile bacteria will grow out from the stab line while non-motile bacteria are present only along the stab line.