Amoeba

biology

1. Adaptations of the respiratory structures Respiration of Amoeba sp.

2. Other unicellular organism that have the same respiratory adaptation as amoeba Why they are the same ? They are protozoa They are one cell thick They are unicellular organisms

3. Kingdom Protista Phylum Protozoa Class Sarcodina Subclass Rhizopoda order Amoebida family amoebidae Genus Amoeba Species Proteus , animalcule, dubia , etc Classification of Amoeba

4. Amoeba Proteus / Chaos diffluens Closely related to giant amoeba Commonly bought at science supply stores

5. Chaos Carolinense / giant amoeba Largest and best known species About 5mm Has thousands of nucleus even amoeba normally has 1

6. Dictyostelium discoideum Soil-living amoeba

7. Structure of Amoeba sp.

8. Question : Where did the oxygen comes from ?

9. Answer : Simple diffusion

10. CONCENTRATION GRADIENT

11. Respiration process in amoeba external surface of amoeba provide adequate surface area to volume Surface area volume Rate of respiration

12. amoeba has large surface area compared to bodies . Simple diffusion is sufficient to transport the gas around , into and out of their bodies. Aquatic habitats ensure that plasma membrane is constantly moist , so respiratory gases can easily dissolve and diffuse across the respiratory surface

13. Amoeba has a thin plasma membrane – allows rapid diffusion of gases large surface area – ensure a maximum contact with respiratory medium

14. Characteristic Protozoa - Amoeba Respiratory system none Respiratory organ none Respiratory structure for gaseous exhange Plasma membrane Respiratory openings none Network of blood capillaries none Passage of respiratory gases none

15. THE END THANK YOU