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Amoeba and Paramecium

Amoeba and Paramecium. Biology 11. Amoeba - GRAMMERS. Growth – 0.6mm biggest (most smaller) Response – positive to food - negative to harsh chemicals, light and cold. -Can distinguish food from non-food. Amoeba Proteus. Amoeba continued…. Adaptations:

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Amoeba and Paramecium

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  1. Amoeba and Paramecium Biology 11

  2. Amoeba - GRAMMERS • Growth – 0.6mm biggest (most smaller) • Response – positive to food - negative to harsh chemicals, light and cold. -Can distinguish food from non-food.

  3. Amoeba Proteus

  4. Amoeba continued… • Adaptations: -pseudopods for moving and feeding. -contractile vacuole -plasmasol / plasmagel • Movement: -by pseudopods or “false feet” -move on solid surfaces – cannot swim -move ~ 20mm/hr

  5. Amoeba continued… • Metabolism: -eat by phagocytosis -drink by pinocytosis -food vacuoles develop -digestion by lysosomes -feed on paramecium and flagellates -O2 & CO2 free to diffuse across P.M.

  6. Amoeba continued… • Excretion: Exocytosis removes indigestible materials. CO2 diffuses across PM • Reproduction: Asexual – cell division. • Size and Shape: Undefined.

  7. Paramecium caudatum

  8. Paramecium Grammers • Growth: 0.05 mm avg. • Respond: -react to chemicals – salt and vinegar -live in slightly acidic environments (stagnant H2O) -anterior end sensitive – move by trial and error

  9. Paramecium continued… • Adaptations: • Cilia to help feed and escape • Contractile vacuoles • Trichocysts

  10. Paramecium continued… • Movement: by cilia in circular motion, move ~ 60 mm/hr • Metabolism: -food pulled into oral groove by cilia -food vacuole forms at gullet -lysosome aids with digestion *Feed mostly on bacteria, smaller protozoans and algae.

  11. Paramecium continued… • Excretion: -Contractile vacuole removes excess H20. -C02 across pellicle by diffusion -anal pore removes waste. • Reproduction: Asexual - cell division Sexual – conjugation (exchange of micronucleus DNA)

  12. Paramecium continued… • Size and Shape: Defined (due to pellicle)

  13. THE END!!!Now - Compare and Contrast

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