BIO1120

**Bacteria:** *Bacterial Life:* - Bacteria are single-celled microorganisms that belong to the domain Bacteria. - They are some of the most ancient life forms on Earth, with fossils dating back over 3.5 billion years. - Bacteria are incredibly diverse and are found in virtually every habitat on Earth, from the deepest oceans to the hottest deserts and even inside the human body. *Types of Bacteria:* 1. **Shape-based Classification:** - Cocci: Spherical bacteria (e.g., Streptococcus...