What have we studied so far? Bacteria Archaea Eukarya Eubacteria Archaebacteria Protista Fungi Plantae Animalia Domains & Kingdoms

Kingdom Protista... ... Most are single celled, and have a nucleus (eukaryotic). Many consumers, but a few are producers.

Guiding Question Area of Interaction How is the world we live in impacted by things that you can’t see? Area of Interaction Health and Social

Groups of Protists Protists are Grouped by what they act like. They can be Animal Like Plant Like Fungus Like

Animal-like Protists(protozoans) are classified by how they move: Zooflagellates- move using a whip-like tail called a flagellum.

Ciliates- Move by little hairs called cilia.

Sarcodines- Move by oozing and flowing false feet called pseudopodia. Amoeba – performing phagocytosis (engulfing food)

Sporozoans- do not move but instead are parasites and move via their host.

Protozoan Diseases Malaria African sleeping sickness Amoebic dysentery Caused by sporozoan. Severe flu-like symptoms to coma and death, carried by the mosquito African sleeping sickness Caused by flagellate. Carried by tsetse fly. Headaches, seizures, death if untreated. Amoebic dysentery Caused by sarcodine. Fever, stomach cramping. dehydration

Plantlike protists (Algae) Unicellular algae and multicellular algae Autotrophs 7 phyla or groups

Euglenophyta Two flagella, no cell wall, chloroplasts Eyespot for sensing light Ex: euglena

Euglenophytes!

Chrysophytes Gold colored chloroplasts Store food in form of oil, not starch

                                                                                           Chrysophytes

Bacillariophyta Diatoms Thin cell walls rich in silicon

Bacillariophytes

Pyrrophyta Dinoflagellates Two flagella Bioluminescence (They glow!) Red Tide: seasonal bloom of Karenia brevis. Toxic to fish.

Pyrrophytes

                                                         

Multicellular plant-like Classified by photosynthetic pigments (different chlorophylls) Look like plants Produce half of the world’s oxygen through photosynthesis

Red algae Live at great ocean depths due to chlorophyll a and phycobilins. Help in the formation of coral reefs

Red algae

Brown algae Chlorophyll a and c Common seaweed, kelp Stipe-stem, blades- leaf, bladders-floatation

Brown algae

Giant Kelp Forests

Green algae Chlorophyll a and b Fresh and salt water Unicellular, colonial, or multicellular

Green algae

Human Uses of Algae Food: sushi, ice cream, salad dressing, pudding, candy bars, syrup, egg nog Medications, Cosmetics Industrial uses: plastics, waxes, paints, lubricants

Algae & the Global Environment Phytoplankton(algae) are the basis for most ocean food chains Algae produce ½ of the world’s oxygen.

Deep Thoughts What would fish eat without protists? How would the global environment change without protists?

Fungus-like Protists Slime molds and water molds