Vibrio cholera, the bacterium that causes the disease "cholera" is not a Coccus, Bacillus, or Spirillum. being of the genus Vibrio, it is a Gram-negative curved/straight rod, motile by means of monotrichous flagellation (a single polar flagellum) for a more complete description of the Vibrio genus, see Dr. Kenneth Todar, PhD's page on http://www.textbookofbacteriology.net/cholera.html It should explain many of the traits common to genus Vibrio.
Coccus, which are spheres, bacillus, which are rods, and spirillum, which are spiral-shaped
spirillum
Sometimes it is hard to remember what is or is not a bacteria. 5 examples of bacteria are coccus, spirillum, vibrio, spirochete, and bacillus.
AIDS, herpes, and syphilis. these are the three different types of bacteria that was chosen by symptoms.
Coccus, Bacillus, and Spirullum.
Coccus (plural cocci): circular or spherical Bacillus (plural bacilli): rod-shaped Spirillum (plural spirilla): spiral shaped, long and thin.
The three basic shapes of bacteria are cocci (spherical), bacilli (rod-shaped), and spirilla (spiral-shaped). Each shape has a unique structure that contributes to the bacteria's function and ability to survive.
Prokaryotic cells have various shapes; the four basic shapes are:Cocci - sphericalBacilli - rod shapedSpirochaete - spiral shapedVibrio - comma shaped
Based on morphology of bacteria, bacteria can classified as one of three group of coccus, bacillus, or spirillum. A coccus is a sphere. A bacillus is a rod-shaped bacterium. A spirillum is a long cell with one or more curves or coils.
Robert Koch
Coccus or cocci: round - spherical Bacillus or Bacilli: Rod Spirillum or Spirilla: rigid, wavy shape Pleomorphism: condition of varying shapes
Bacillus subtillus will test positive when performing a VP and Citrate test. Also, bacillus cereus is much more motile. It isn't as dependable as the chemical tests, but the cereus colonies will appear wispy and more widespread on an agar plate than those of subtilis.