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The Eukaryotes

The Eukaryotes. Eukaryotes. Generally larger than prokaryotic cells Contains a nucleus and other organelles bound by a membrane. Eukaryotes. The mitochondria and chloroplast: In terms of cellular organelles, what makes the mitochondria and chloroplast unique?. Protista.

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The Eukaryotes

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  1. The Eukaryotes

  2. Eukaryotes • Generally larger than prokaryotic cells • Contains a nucleus and other organelles bound by a membrane

  3. Eukaryotes • The mitochondria and chloroplast: • In terms of cellular organelles, what makes the mitochondria and chloroplast unique?

  4. Protista • Extremely diverse group of eukaryotes • Range from simple, single-celled organisms to giant, multicellular organisms

  5. Protista

  6. Protists • Mainly aquatic organisms • Some are autotrophs • Others are heterotrophs • Many are symbiotic organisms • Know examples!

  7. Types of Protists • Found in the table on page 63.

  8. Types of Protists • Autotrophs: Undergo photosynthesis similar to plants • Euglenoids: Single-cellular • Diatoms: Single-cellular • Algae (Red, Green, or Brown)

  9. Types of Protists

  10. Types of Protists

  11. Types of Protists • Heterotrophs • Ciliates: single cells with many cilia • Flagellates (dino- and choano-) • Unicellular with flagellum • Amoebas: Unicellular • Move by deforming cell • Cells extend “pseudopods” out • Apicomplexa: Unicellular • All parasitize animals • Plasmodium: Causes malaria • Cryptosporidium: Water-born protist causing diarrhea

  12. Types of Protists

  13. Protist life cycles • Simple unicellular organisms • Describe the process by which these organisms undergo reproduction and a process that results in increased genetic diversity.

  14. Protist life cycles • Multicellular organisms and parasitic organisms • Usually have more complex life cycles • Alternation of generation

  15. Life cycle of brown algae

  16. Life cycle of Plasmodium • Know Figure 14 on page 66 of textbook

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