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Melanie Barrera Amoeba Sisters Cell Transport

Simple diffusion is passive transport where molecules move with the concentration gradient through the cell membrane, like oxygen and carbon dioxide, to maintain homeostasis.

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AMOEBA SGTER5: VIDEO RECAPCELLTRANSPORTAmoeba Sisters Video Recap:Ceii Transport2. What is simple diffusion ?'■In.; i--! i l i i ' .■i : d►;•■.1,/■■III-' ‘. I l f .•iTiUVL-Ja ol-.g a . u r i c i -.IrdtlO'i g r a d l f l i ta Sulu’ On Oftffcross a semfpwnTRabl*1rrierribrane If if ? mr.lerI I I ''il■■'ILL-I'il.'H:■- I p l i -i l l V . i S i g i i.Icell T< Tibr,T- -■b e t v . - -I . e l a v - r s ir. Ihe mierrtbraneThe cell membrane isimportant formaintaininghomeostasis, because itcontrols what entersand leaves a cell.1. Sketch thephospholipid bilayer of a cell memorane below and label thepolar heads and nonpolar tails.3. Circle th e statements below that wouId be TRUE aboutsimple diffusion. HINT: There is more than one!It is a form of passive transport.(5JMolecules travel with the concentration gradient.C)It is how glucotse travels across the cell membrar.e.It is how oxygen and carbon dioxide travel acrossthemembrane.E|This transport is typical for large molecules.Moving with the Concentration Gradient4. "Moving with the flow" [i.e. going with the concentration gradient) isthe direction of flow in passive transport. Show this in the diagram onright by drawing in 10 total circles (to represent molecules) . You mustdecide a certain amount to place on the left vs. the right side afterviewing the arrow indicating the direction of movement. Label thconcentration side and low concentration side.Low C o n c w l r a i wHigti ConcentrationEndocytosis and Exocytosis5. Are endocytosis and exocytosis forms of passive or active transport?■;~,|, ,r6. Give a scenario where a cel may need to perform a form, of endocytosls.•: .■I:rr■■-'■■,d*peridlng or>how irircrllit b m g h r : iubstaf.cni■7. Give a scenario where a cell may need to perform a form of exocytosis. A r -|.",;.yrrr, a 1-- --r.of i >■yrn-r-i j H I h g fid at c«H Waste
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Biology

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