Key Takeaways

KEY TAKEAWAYS

• Prokaryotes can live in just about any habitat on earth. • Prokaryotes are all unicellular but can form different arrangements. • Gram-negative bacteria are divided into proteobacteria and non-proteobacteria. • Gram-positive bacteria are divided into high GC bacteria and low GC bacteria. • Archaea are unicellular. Many prefer very extreme environments. • Deeply branching bacteria are considered a common ancestor to all other living things throughout evolution.