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Protist Notes

Protist Notes. Get your bacteria graphic organizer out and number it journal #6. Protist Kingdom. What is a Protist?. Member of the protist kingdom, eukaryotes. 3 Types of Protists. 1. Animal like protists

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Protist Notes

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  1. Protist Notes Get your bacteria graphic organizer out and number it journal #6

  2. Protist Kingdom What is a Protist? • Member of the protist kingdom, eukaryotes.

  3. 3 Types of Protists 1. Animal like protists A. Called protozoans B. unicellular heterotrophs C. Grouped by how they move 1. Flagella 2. Cilia 3. psuedopods 4. No movement at all

  4. 2. Plant like Protists A. called:Algae B. Description: unicellular and multicellular autotrophs C. no roots, stems, or leaves D. a key characteristic used to classify algae are the photosynthetic pigments they contain

  5. 3. Fungus like Protists A. decomposers B. Unlike true fungi, fungus like protists lack true cell walls

  6. 2. Amoeba A.Move with psuedopods: false feet 1. Cell shape changes constantly B. Engulf food with psuedopods forming food vacuoles C. Live in water and moist soil D. Contractile vacuole pumps out excess water E. Reproduce asexually by splitting: binary fission

  7. Figure 20-4 An Amoeba Section 20-2 Contractile vacuole Psuedopods Nucleus Endoplasm Food vacuole Ectoplasm Go to Section:

  8. Animal like Protists-Protozoans 1. Euglena A. Also known as the flagellates B. Have one or more flagella which move back & forth C. Absorb food through their cell membranes D. live in moist environments

  9. E. Can be free living: flagellate which lives in the gut of termites helping them to break down wood F. Can reproduce asexually by binary fission or sexually by gametes

  10. Euglena Section 20-3 Chloroplast Gullet Pellicle Contractile vacuole Nucleus Flagella Eyespot Go to Section:

  11. 3. Ciliates A. move by beating cilia B. Live in aquatic environments C. Are free living-not parasites D. Reproduce by: 1. binary fission 2. Conjugation-not actually reproduction, pieces of genetic info are exchanged so more diversity when binary fission happens

  12. E. complex nuclei 2 nuclei 1. Macronucleus-everyday operations 2. Micronucleus-reproduction F. Contractile vacuole:pumps out excess water G. Oral groove:like a mouth H. Gullet: encloses food like a stomach, makes up a food vacuole I. Anal pore:wastes are removed J. Example: Paramecium

  13. Trichocysts Oral groove Lysosomes Gullet Anal pore Contractile vacuole Micronucleus Macronucleus Food vacuoles Cilia Figure 20-5 A Ciliate Section 20-2 Go to Section:

  14. What do all 3 of these organisms have in common that enable them to control their day to day functions? NUCLEUS

  15. Sporozoans • Cannot move • spores are their reproductive cells • Have complex life cycles including hosts • Ex: Plasmodium- carries malaria 1. Reproduce in mosquito's • 2. Spores are injected while feeding

  16. 3. spores are released into the blood

  17. Figure 20-7 The Life Cycle of Plasmodium Section 20-2 Mosquito bites human, injecting saliva that contains Plasmodium sporozoites Plasmodium undergoes several stages of development in mosquito’s body Plasmodium sporozoites Sporozoites infect liver cells Anopheles mosquito bites infected human and picks up Plasmodium cells Liver Infected liver cells burst, releasing Plasmodium cells that infect red blood cells Infected red blood cells burst, releasing Plasmodium cells; some can infect other red blood cells, and others can infect mosquitoes Plasmodium cells Red blood cells Go to Section:

  18. Quiz #3 Protists

  19. 1. Some unicellular organisms are motile (have the ability to move) and some are nonmotile. Which cellular structures are associated with movement? A.Ribosomes B. Flagella C. Chloroplasts D.Vacuoles 2. These organelles pump out excess water. A. lysosomes C. gullet B. pellicle D. contractile vacuole 3. Which organism contains a nucleus? A. amoeba C. euglena E. only A & C B. paramecium D. all

  20. 4. Amoebas reproduce by: A. conjugation C. sexual reproduction B. binary fission D. expansion 5. The one-celled eukaryotic organisms shown to the right are often found in freshwater ponds. What is one characteristic they all have in common? A.Flagellum B.Nucleus C.Cilia D.Pseudopodia

  21. Quiz #2 Protists Cont.

  22. True/false: Euglena move with cilia. • The gullet, anal pore, and oral groove make up the paramecium’s: A. reproductive system C. digestive system B. nervous system D. circulatory system • Which organism contains 2 nuclei? A. amoeba C. euglena B. paramecium D. sporozoan • Which groups of protozoans are considered parasitic? A. Sarcodines C. Sporozoans B. Ciliates D. Algae • Which encloses food like a stomach? A. oral groove B. gullet C. lysosome D. vacuole

  23. Journal #5 1. Describe the steps necessary to make a microscope slide.

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