What are some common types of bacteria?

Bacteria are diverse microorganisms that exist all around us. Some common types include:

1. Bacillus: Rod-shaped bacteria, such as Bacillus subtilis.
2. Coccus: Spherical bacteria, like Staphylococcus aureus.
3. Spirillum: Spiral-shaped bacteria, for example Spirillum volutans.

These are just a few examples, and there are many more types of bacteria with unique characteristics and functions. Studying these microorganisms help us understand their impact on the environment and human health.