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Page 74
... substance that has been pumped across a membrane can do work as it moves back across the membrane by diffusion , analogous to water that has been pumped uphill and performs work as it flows back down . Another specialized transport ...
... substance that has been pumped across a membrane can do work as it moves back across the membrane by diffusion , analogous to water that has been pumped uphill and performs work as it flows back down . Another specialized transport ...
Page 75
... substance to the " uphill " transport of a second substance against its own concentration gradient . For example , a plant cell uses the gradient of hydrogen ions generated by its proton pumps to drive the active transport of amino ...
... substance to the " uphill " transport of a second substance against its own concentration gradient . For example , a plant cell uses the gradient of hydrogen ions generated by its proton pumps to drive the active transport of amino ...
Page 92
... substance across a membrane with no energy investment Diffusion is the spontaneous movement of a substance down its concentration gradient ( pp . 130– 131 ) . Activity Diffusion - Effects of Osmosis on Water Balance Water flows across a ...
... substance across a membrane with no energy investment Diffusion is the spontaneous movement of a substance down its concentration gradient ( pp . 130– 131 ) . Activity Diffusion - Effects of Osmosis on Water Balance Water flows across a ...
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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