Protists October 21, 2013 Warm Up: What is the second Eagle Team Classroom expectation?Warm Up: What is the second Eagle Team Classroom expectation? Reminder! If you have not turned in the Elodea Lab, it was due last Friday!Reminder! If you have not turned in the Elodea Lab, it was due last Friday! We will be completing a lab using the microscopes on Wednesday and Thursday of this week.We will be completing a lab using the microscopes on Wednesday and Thursday of this week.

Protists October 21, 2013 Homework: Summarize and go over the notes taken today on the Kingdom Protista. Vocabulary Quiz Words:Homework: Summarize and go over the notes taken today on the Kingdom Protista. Vocabulary Quiz Words: 1.Protists 2.Animal-like 3.Plant-like 4.Fungus-like 5.Protozoa 6.Pseudopods 7.Amoeba 8.Paramecium 9.Euglena 10.Volvox Class Work: Take Cornell Notes on Protists.Class Work: Take Cornell Notes on Protists. Question of the day: What are Protists?Question of the day: What are Protists?

Protists Kingdom Protista is the most diverse of all the kingdoms. What makes this kingdom so diverse?

Protists Protists can be animal-like, plantlike, or fungus-like. Protists are eukaryotes that are not animals, plants, or fungi.

Protists Are protists helpful in any way? Elaborate Sewage treatment. Diatoms used to filter water Food source –Seaweed (algae) Gelling agent –Jello Protozoan in the human gut keep in check the bacteria population

Protists Can protists be harmful? Parasites (disease) –Malaria caused by Plasmodium –African Sleeping Sickness –Gairdiasis –Brain Eating AmoebaBrain Eating Amoeba –Red TidesRed Tides

Protists Animal-like protists consume other organisms. –heterotrophs –single-celled

Protists Plantlike protists are photosynthetic. –single-celled, colonial, or multicellular –no roots, stems, or leaves

Protists Funguslike protists decompose dead organisms. –heterotrophs –can move, whereas fungi cannot

Protists Protists are difficult to classify. Protista is one kingdom in the domain Eukarya.

Protists Protist classification will likely change.

Protists II. Animal-like Protists Animal-like protists are single-celled heterotrophs that can move.

Protists Animal-like protists move in various ways. Animal-like protists are often called protozoa. macronucleus food vacuole oral groove micronucleus contractile vacuole cilia

Protists Some protozoa move with flagella

Protists Some protists move with pseudopods. – change shape as they move – amoebas, for example

Protists Amoeba Structure Virtual Lab

Protists Some protozoa move with cilia. macronucleus food vacuole oral groove micronucleus contractile vacuole cilia – cilia help protists swim and capture food

Protists Paramecia have contractile vacuoles to expel excess water. To avoid an obstacle, they back up, and move away in an avoidance reaction.

Protists Paramecium Virtual Lab

Protists Some animal-like protists cause disease. sporozoites human liver liver cells developed parasites red blood cells Malaria is caused by Plasmodium and spread by mosquitoes. Malaria Infection

Protists Trypanosoma causes African sleeping sickness

Protists Giardia is contracted from contaminated water Giardia is a microscopic parasite that causes the diarrheal illness known as giardiasis. Giardia is found on surfaces or in soil, food, or water that has been contaminated with feces (poop) from infected humans or animals.

Protists Protozoa can be beneficial One protozoan lives inside termites, digests wood. Both species benefit, so this is called mutualism. Trichonympha

Protists III. Plantlike Protists Algae are plantlike protists. Plantlike protists can be single-celled or multicellular. colony daughter colony Volvox

Protists Daughter colonies leaving the mother colony.

Protists A. Euglenoids are a large group of plantlike protists. pellicle nucleus chloroplast eye spot contractile vacuole flagellum – mostly photosynthetic, have one or two flagella

Protists Euglena Virtual Lab

Protists Euglena moves toward the light, which is known as a positive phototropism. Has a red eyespot, which is light sensitive

Protists B. Dinoflagellates are marine plantlike protists. Dinoflagellates –may be bioluminescent – can cause red tide

Protists Noctiluca scintillans

Protists C. Diatoms are plantlike protists with shells. – shells made of silica – produce large amounts of oxygen

Protists More diatoms

Protists Multicellular algae are classified by their pigments. – Green algae – Brown algae: kelp – Red algae

Protists Red algae is used to make agar, food thickener, and medicine capsules. Can exist at greater depths than brown or green algae

Protists Spirogyra : a type of green algae Green algae can be unicellular or multicellular

Protists IV. Fungus-like protists include slime molds and water molds decomposers, like fungi can move, like animals

Protists Slime molds Eukaryotic organisms: fungus-like and animal-like Decomposers, can move

Protists Water molds are freshwater, fungus-like protists. – one type of water mold caused Great Potato Famine of Ireland in the 1800’s – made of branching strands of cells – can be parasites of plants or fish

What could be placed in the center of this Venn diagram?

Brainpop