Amoeba
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Transcript of Amoeba
![Page 1: Amoeba](https://reader036.fdocuments.net/reader036/viewer/2022062420/55ceb778bb61eb4b688b46b9/html5/thumbnails/1.jpg)
Adaptations of the respiratory structures
Respiration of Amoeba sp.
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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
![Page 3: Amoeba](https://reader036.fdocuments.net/reader036/viewer/2022062420/55ceb778bb61eb4b688b46b9/html5/thumbnails/3.jpg)
Kingdom Protista
Phylum Protozoa
Class Sarcodina
Subclass Rhizopoda
order Amoebida
family amoebidae
Genus Amoeba
Species Proteus , animalcule, dubia ,etc
Classification of Amoeba
![Page 4: Amoeba](https://reader036.fdocuments.net/reader036/viewer/2022062420/55ceb778bb61eb4b688b46b9/html5/thumbnails/4.jpg)
Amoeba Proteus / Chaos diffluens Closely related to giant
amoeba Commonly bought at
science supply stores
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Chaos Carolinense / giant amoeba
Largest and best known species
About 5mm Has thousands of
nucleus even amoeba normally has 1
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Dictyostelium discoideum
Soil-living amoeba
![Page 7: Amoeba](https://reader036.fdocuments.net/reader036/viewer/2022062420/55ceb778bb61eb4b688b46b9/html5/thumbnails/7.jpg)
Structure of Amoeba sp.
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Question : Where did the oxygen comes from ?
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Answer : Simple diffusion
![Page 10: Amoeba](https://reader036.fdocuments.net/reader036/viewer/2022062420/55ceb778bb61eb4b688b46b9/html5/thumbnails/10.jpg)
CONCENTRATION GRADIENT
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Respiration process in amoeba
• external surface of amoeba provide adequate surface area to volume
Surface area volume
Rate of respiration
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• 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
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• Amoeba has a thin plasma membrane – allows rapid diffusion of gases
• large surface area – ensure a maximum contact with respiratory medium
![Page 14: Amoeba](https://reader036.fdocuments.net/reader036/viewer/2022062420/55ceb778bb61eb4b688b46b9/html5/thumbnails/14.jpg)
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
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THE END THANK YOU