In General Usually unicellular Reproduction: Some asexual, some sexual, some both Kingdom for life that doesn’t fit in animals, plant or fungi kingdom Mostly aquatic life 3 main categories

AKA: Protozoans Basic Features: – Aquatic, unicellular – Heterotrophic: pathogens, parasites, predators Classified by how they move: 1) Pseudopods : move w/ pseudopodia (false- feet) – Engulf by phagocytosis – Ex: Amoebas 2) Flagellates: move w/ flagella – Ex: Zooflagellates 3) Ciliates: move w/ cilia – Ex: Paramecia Animal-Like Protista

Amoeba (Pseudopod)

Flagellates Moving

Ciliates

Animal-Like Protista & Disease Malaria – Cause: Plasmodium – Vector: mosquitoes – Effects in humans: Fever, vomiting, coma, death Plasmodium injected by mosquito bite Plasmodium develop inside your liver Plasmodium reproduce inside your RBCs Plasmodium reenters mosquito when bitten

Animal-Like Protista & Disease Malaria – Cause: Plasmodium – Vector: mosquitoes – Effects in humans: Fever, vomiting, coma, death Sleeping sickness – Cause: Trypanosoma – Vector: tsetse flies – Effects in humans: Coma & death Trypanosoma injected by tsetse bite Trypanosoma multiplies and bursts from cells Trypanosoma reenters tsetse when bitten

Plantlike Protista AKA: Algae Most unicellular; No leaves, stems, roots Perform photosynthesis with chloroplasts Classified by their type of cell wall 1) Euglenoids: use flagella to swim – Animal & plant-like 2) Dinoflagellates – Most plankton – Basis of aquatic food chains 3) Diatoms – Glasslike shells – Provide ~ ½ the O 2 on earth

Euglena

Fungus-like Protista Basic Features: – Decomposers: absorb nutrients – Live in moist environments 2 major groups: 1) Slime Molds – large (~1 meter) single celled mass of cytoplasm – Fungus-like (absorbs food) – Animal-like (can move) 2)Water molds: can be parasitic – Ex: Potato blight: caused Irish potato famine (1840’s)

Cool Slime Mold Video

Protista: The Origins of Multicellular Life Some protista are… 1) Single-celled – Live by themselves 2) Colonial – Group of independent acting cells – No specialized cells 3) Multicellular – Cells specialized to be specific jobs Importance: Ancestors of multicellular life Unicellular Euglena This is a colony of cells called Volvox Multicellular Kelp

Kingdom Protista Animal-like 1.Pseudopods Move with false feet 2.Flagellates Move with flagella 3.Ciliates Move with cilia Plant-like 1.Diatoms Glass-like shells 2.Dinoflagellates Plankton 3.Euglenoids Move like animals, autotrophs like plants Fungus-like 1.Slime molds Move like animals, absorb food like fungi 2.Water molds Often parasites Responsible for Irish Potato Famine

Kobe Kuiz 1) Name the three categories of protista. 2) Which category of protista has members that are able to move? 3) Which category of protista has members that absorb nutrients? 4) Which category of protista has members that are heterotrophs? 5) Which category of protista has members that hunt? 6) How does a pseudopod, flagella, and cilia differ? 7) Name the 3 major categories of protozoa. 8) Name the 3 major categories of algae. 9) Name the 2 major categories of fungus-like protista.