Ch8.1CellularTrans.

Ch8.1CellularTrans. - Cellular Transport The movement of...

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Cellular Transport The movement of materials in and out of cells Ch 8
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Cellular Transport What substances move ? How do they move? What is the membrane structure? What is passive versus active transport ?
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Solution Concentration : Like density = # molecules per volume of container Low or High Concentration * * * * * * * * * * * * * * * * * * * * * * * * * * * * High Conc. Low Conc .
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Diffusion Movement of molecules: gas or liquid Law of Diffusion : From High Concentration to Low Concentration
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Diffusion of gases……. O 2 High CO 2 High CO2
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Cell Membrane Surrounds cells Gives shape to animal cells Inside cell wall of plant cells
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Cell Membrane Made of: Lipid layer Protein channels Semi- permeable
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Cell Membrane
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Semi-permeable: Semi= “some” substances may pass Selective Based upon size & solubility H 2 0 flows Salt remains
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Osmosis Movement of water Across a semi- permeable membrane Special case of diffusion
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Equilibrium Equi” =Equal concentrations On both sides of membrane Osmosis stops Isotonic Solution H2O H2O H2O H2O H2O H2O H2O H2O H2O
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In Osmosis….only H
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This note was uploaded on 11/13/2011 for the course BIO 100 taught by Professor Robinson during the Winter '08 term at BYU.

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Ch8.1CellularTrans. - Cellular Transport The movement of...

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