Here's a breakdown of why "monococcus" isn't used:
* Shape: Bacteria can be spherical (cocci), rod-shaped (bacilli), spiral (spirilla), or other shapes.
* Arrangement: Cocci can arrange themselves in various ways:
* Diplococci: Pairs of cocci.
* Streptococci: Chains of cocci.
* Staphylococci: Clusters of cocci.
* Tetrads: Groups of four cocci.
* Sarcinae: Cube-like packets of eight cocci.
Examples of Cocci Bacteria:
* Staphylococcus aureus: Causes skin infections, food poisoning, and other illnesses.
* Streptococcus pneumoniae: Causes pneumonia, ear infections, and meningitis.
* Neisseria gonorrhoeae: Causes gonorrhea, a sexually transmitted infection.
* Neisseria meningitidis: Causes bacterial meningitis.
Key takeaway: "Monococcus" implies a single bacterium, but bacteria are classified by their morphology and arrangements, not by the number of cells in a colony.
