• Both kingdoms are:

  • Unicellular

  • Prokaryotic

  • Have both autotrophic and heterotrophic species

• How are they different, then?

Archaebacteria and eubacteria

• Archaebacteria - appeared approximately 3.7 billion years ago

• Eubacteria - appeared approximately 3.5 billion years ago

When Did Bacteria Appear?

• Archaebacteria - are extremophiles (they live in extreme environments

  • Thermophiles - live in hot springs

  • Halophiles - live in extremely salty water

• Eubacteria - live everywhere

Where Do Bacteria Live?

• Archaebacteria - have a variety of shapes

• Eubacteria - have one of three shapes:

  • Cocci

  • Bacilli

  • Spirilla

What Are The Shapes of bacteria?

• Cocci - spherical, or "ball" shaped

• Bacilli - rod shaped

• Spirilla - spiral shaped

Eubacteria shapes

• Bacteria have two ways to move:

  • Cilia (singular cilium) - microscopic "hairs" that cover a bacterium and push them through water

  • Flagellum (plural flagella) - a "whip" connected to a bacterium and propels them

How Do Bacteria Move?