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Domains and Kingdoms

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

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Domains and Kingdoms

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  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. KindomProtista • 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).

  11. THINK PAIR SHARE: Are Homo sapiens more closely related to Archaea or Bacteria?

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

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

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