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Page 92
... concentration gradient ( pp . 130– 131 ) . Activity Diffusion - Effects of Osmosis on Water Balance Water flows across a membrane from the side where solute is less concentrated ( 92 Transport Proteins Polar molecules ...
... concentration gradient ( pp . 130– 131 ) . Activity Diffusion - Effects of Osmosis on Water Balance Water flows across a membrane from the side where solute is less concentrated ( 92 Transport Proteins Polar molecules ...
Page 93
... osmosis occurs . Cell survival depends on balancing water uptake and loss . Cells lacking walls ( as in animals and some protists ) are isotonic with their environments or have adaptations for osmoregulation . Plants , prokaryotes ...
... osmosis occurs . Cell survival depends on balancing water uptake and loss . Cells lacking walls ( as in animals and some protists ) are isotonic with their environments or have adaptations for osmoregulation . Plants , prokaryotes ...
Page 100
... all others ? a . osmosis b . diffusion of a solute across a membrane c . facilitated diffusion d . passive transport e . transport of an ion down its electrochemical gradient L 5. Based on the model of sucrose uptake in Figure 100.
... all others ? a . osmosis b . diffusion of a solute across a membrane c . facilitated diffusion d . passive transport e . transport of an ion down its electrochemical gradient L 5. Based on the model of sucrose uptake in Figure 100.
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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