1. Domains and Kingdoms Images, from left to right: Cholera bacteria, Volvox colony, Strep bacteria

2. THE DOMAINS  A domain is the broadest level in the classification of life.  All living organisms belong to one of 3 domains:  ARCHAEA  BACTERIA  EUKARYA Do you remember which one you belong to?

3. I. ARCHAEA  Domain Archaea contains one kingdom – also named Archaea.  Comes from a Greek word meaning “ancient.” In fact, the last common ancestor of all life on Earth may have been archaea – that’s how old they are!  Archaea are Prokaryotic (does not have a nucleus)  Archaea are often found in extreme environments where other life cannot survive. For example, these extremophiles can be found in extremely hot, cold, salty, oxygen-free and/or acidic environments such as in hot springs, volcanic environments, salt lakes or in the guts of animals.

4. II. BACTERIA  Domain Bacteria contains one kingdom – also named Bacteria.  Bacteria are prokaryotic.  Bacteria are microscopic  There are more bacteria in our bodies than there are cells in our body!

5. Bacteria - Continued  Bacteria have 3 shapes: round, rod, and spiral.

6. III. EUKARYA  Are eukaryotic (cells have a nucleus).  The 4 Kingdoms found in this Domain are:  Plantae  Animalia  Fungi  Protista

7. Kingdom Plantea  Plants are eukaryotic  Plants have cell walls (animals have cell membranes)  Plants make their own food (autotrophic) through photosynthesis.  Most life forms depend on plants for food and oxygen.

8. Kindom Protista  All Protists are eukaryotic.  Most are single-celled; some are simple, multi-cellular organisms.  Some protists are animal-like (protozoa); some are plant- like (algae); some are both (euglena)!  Protists are also fungus-like (slime molds).

9. Kingdom Fungi  All Fungus are eukaryotic.  Fungus can be single-celled (yeast) or multi-cellular (mushroom).  Fugus break down and absorb nutrients from their surroundings (heterotrophic).  Fungus do not photosynthesize or move.

10. Kingdom Animalia  Animal cells are eukaryotic and contain a cell membrane.  Animals are multi-cellular.  Animals have special senses that allow them to respond to their environment.  Animals can usually move – some, like sponges, have very limited ability to move.  Animals feed off of other life forms (heterotrophic).

12. Do you remember…. IIn which domain would you find an organism catagorized that lives in the Great Salt Lake in Utah? Archaea IIn which domain would you find the E. coli bacteria? Bacteria HHow many Kingdoms are in the domain Eukarya? 4 CCan you name them? Protista, Fungi, Plantae, Animalia

13. Do you remember… HHow do plants get nourishment? Photosynthesis NName 2 characteristics of plant cells. 1. Eukaryotic2. Cell wall WWhat 3 other organisms are Protists similar to? Plants, animals and/or Fungus AAre protists eukaryotic or prokaryotic? Eukaryotic AAre fungus single-celled or multi-cellular? They may be either HHow do animals get nourishment? By consuming other living things