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15 Cards in this Set
- Front
- Back
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Protists |
Heterotrophs & Autotrophs (Algae) single-cell (protozoans) single-cell(micro) multi-cell multi-cell(macro) |
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Single-cell Heterotrophs (Protozoans) |
Organisms that must obtain their food by engulfing other organisms 1. pseudopods (amoeba) 2. flagellates 3. ciliates 4. sporozoan |
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Pseudopod characteristics |
-AKA Amoeba -Inhabit freshwater, marine, soil -Porous multichambered shells (calcium carbonate) |
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Flagellate characteristics |
-Absorb or phagocytize (engulfs) prey -Flagella for movement -Symbiotic, free-living -Ex. Trypanosoma - parasite in bloods that causes African sleeping sickness |
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Ciliate characteristics Single-cell Heterotroph |
-Use cilia to move (beat to move) -Most complex protozoan -Ex. Paramecium |
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Slime molds characteristics |
-Multi-cellular Heterotroph -Mulch-like, bright yellow/orange -Engulfs food by phagocytosis |
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Autotrophic Protists |
-Make its own organic molecules (photosynthesis) MICROALGAE - Euglena, Dinoflagellates, Diatoms, Volvox MACROALGAE - Seaweeds |
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Euglena characteristics Microalgae autotroph |
-Single-cell motile algae (has nucleus) -Chloroplasts for photosynthesis & Flagella for movement -Without light, chloroplasts die & organism becomes heterotrophic (phagocytosis) |
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Dinoflagellates characteristics Microalgae autotroph |
-Part of phytoplankton - foundation of most marine food chains -Causes red tide (toxin in shellfish harmful to humans) -Mutualistic relationship with corals -Move with flagella -Bioluminescent (protein that produces yellow/green light) |
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Diatom characteristics Microalgae autotroph |
-Most important photosynthesizers in cold marine water -Cell wall made of silica -Mined for economic uses: toothpaste, silver polish, aquarium filters |
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Volvox characteristics Microalgae autotroph |
-Colonial green algae with daughter colonies inside -Largest of Microalgae |
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MacroAlgae |
-SEAWEED -Divided into three groups: red, green, brown -Have chloroplasts with chlorophyl a -Leaves are blades -No avascular system -No root |
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Red Seaweed characteristics Macroalgae autotroph |
-Used to make agar - polysaccharide in the cell wall, gelatin substance used to grow bacteria -Carrageen - gives texture to dairy foods and soup -Can have some single-cell forms |
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Green Seaweed characteristics Macroalgae autotroph |
-Share many characteristics with plants -Thought to be ancestor of the plants -Can have some single-cell forms |
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Brown Seaweed characteristics Macroalgae autotroph |
-Kelps largest algae -Algin - polysaccharide in cell wall used commercially as thickening or emulsifying agent in toothpaste, ice cream, pudding |
