Biology, Pages 135-140CD-ROM contains: investigations, videos, word study & glossary, cumulative tests and chapter guides. |
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Page 64
... Active Transport To pump a molecule across a membrane against its gradient requires work ; the cell must expend energy . Therefore , this type of membrane traffic is called active transport . The transport proteins that 64.
... Active Transport To pump a molecule across a membrane against its gradient requires work ; the cell must expend energy . Therefore , this type of membrane traffic is called active transport . The transport proteins that 64.
Page 67
... transport and active transport . Figure 7.16 ( from page 135 ) The sodium - potassium pump : a specific case of active transport . This transport system pumps ions against steep concentration gradients : Sodium ion concentration ...
... transport and active transport . Figure 7.16 ( from page 135 ) The sodium - potassium pump : a specific case of active transport . This transport system pumps ions against steep concentration gradients : Sodium ion concentration ...
Page 94
... Transport Aided by Proteins In facilitated diffusion , a transport protein speeds the movement of water or a solute across a membrane down its concentration gradient . Activity Facilitated Diffusion Concept 7.4 : Active transport uses ...
... Transport Aided by Proteins In facilitated diffusion , a transport protein speeds the movement of water or a solute across a membrane down its concentration gradient . Activity Facilitated Diffusion Concept 7.4 : Active transport uses ...
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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