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Page 65
... maintain internal concentrations of small molecules that differ from concentrations in its environment . For example , compared to its surroundings , an animal cell has a much higher concentration of potassium ions and a much lower ...
... maintain internal concentrations of small molecules that differ from concentrations in its environment . For example , compared to its surroundings , an animal cell has a much higher concentration of potassium ions and a much lower ...
Page 66
Neil A. Campbell. concentration of sodium ions . The plasma membrane helps maintain these steep gradients by pumping sodium out of the cell and potassium into the cell . As in other types of cellular work , ATP supplies the energy for ...
Neil A. Campbell. concentration of sodium ions . The plasma membrane helps maintain these steep gradients by pumping sodium out of the cell and potassium into the cell . As in other types of cellular work , ATP supplies the energy for ...
Page 76
... maintained by the proton pump . Plants use the mechanism of sucrose - H * cotransport to load sucrose produced by photosynthesis into specialized cells in the veins of leaves . The sugar can then be distributed by the vascular tissue of ...
... maintained by the proton pump . Plants use the mechanism of sucrose - H * cotransport to load sucrose produced by photosynthesis into specialized cells in the veins of leaves . The sugar can then be distributed by the vascular tissue of ...
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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