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Page 67
... specific case of active transport . This transport system pumps ions against steep concentration gradients : Sodium ion concentration ( represented as [ Na ] ) is high outside the cell and low inside , while potassium ion concentration ...
... specific case of active transport . This transport system pumps ions against steep concentration gradients : Sodium ion concentration ( represented as [ Na ] ) is high outside the cell and low inside , while potassium ion concentration ...
Page 74
... specific solute can indirectly drive the active transport of several other solutes in a mechanism called cotransport . A substance that has been pumped across a membrane can do work as it moves back across the membrane by diffusion ...
... specific solute can indirectly drive the active transport of several other solutes in a mechanism called cotransport . A substance that has been pumped across a membrane can do work as it moves back across the membrane by diffusion ...
Page 94
... uses energy to move solutes against their gradients The Need for Energy in Active Transport Specific membrane proteins use energy , usually in the form of ATP , to do the work of active 94 Investigation How Do Salt ...
... uses energy to move solutes against their gradients The Need for Energy in Active Transport Specific membrane proteins use energy , usually in the form of ATP , to do the work of active 94 Investigation How Do Salt ...
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active transport animal cells artificial cell blood called cotransport cell is negative Cell-Cell Recognition cellular cholesterol concentration gradient Concentrations Affect Cells Concept 7.4 Concept Check cytoplasm decreasing extracellular drive the active electrochemical gradient Endocytosis In endocytosis Energy in Active exocytosis and endocytosis extracellular solution facilitated diffusion fluid mosaic model fungi glucose Golgi hydrogen ions hydrophobic hypertonic hypotonic environment inside isotonic lipid bilayer main electrogenic pump Maintenance of Membrane membrane potential membrane proteins Membrane Structure membrane traffic move solutes nerve cell neuron occurs by exocytosis osmosis osmotic passive transport phospholipids pinocytosis plant cells plasma membrane occurs positive charge potassium ions proteins are embedded protists proton pump pump of plants Pumps Ions receptor-mediated endocytosis Salt Concentrations Affect selectively permeable Self-Quiz side where solute signal sodium-potassium pump solute(s specific transport protein store energy substance sucrose uptake sucrose-H suggested answers three sodium ions translocates transport uses energy types of endocytosis voltage Water Balance