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 Extremely diverse group of eukaryotes

Range from simple, single-celled organisms to giant, multicellular organisms

Protista

Protists Mainly aquatic organisms

Some are autotrophs Others are heterotrophs

Many are symbiotic organisms Know examples!

Types of Protists

Found in the table on page 63.

Types of Protists Autotrophs: Undergo photosynthesis

similar to plants

Euglenoids: Single-cellular

Diatoms: Single-cellular

Algae (Red, Green, or Brown)

Types of Protists

Types of Protists

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

Types of Protists

Protist life cycles Simple unicellular organisms

Describe the process by which these organisms undergo reproduction and a process that results in increased genetic diversity.

Protist life cycles Multicellular organisms and parasitic

organisms

Usually have more complex life cycles

Alternation of generation

Life cycle of brown algae

Life cycle of Plasmodium Know Figure 14 on page 66 of textbook