Transport of potassium ions into an animal cell by the sodium-potassium pump requires high intracellular concentrations of sodium. high intracellular concentrations of potassium. energy from ATP. low intracellular concentrations of potassium. low intracellular concentrations of sodium.
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This energy is provided by ATP (adenosine triphosphate). The pump works by moving 3 sodium ions out of the cell and 2 potassium ions into the cell. This creates a high concentration of sodium ions outside the cell and a high concentration of potassium ions inside Show more…
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If concentration of sodium and potassium ions were at the following concentrations inside and outside a cell, how could the two molecules enter the cell? Molecules | Concentration inside the Cell | Concentration outside the Cell Sodium ion (Na+) | 10 mM | 150 mM Potassium ion (K+) | 140 mM | 5 mM Both would diffuse through the membrane into the cell without going through protein channels Sodium ions could enter by facilitated diffusion while the potassium ions would need active transport to enter the cell Potassium ions could enter by facilitated diffusion while the sodium ions would need active transport to enter the cell Both would enter by facilitated diffusion through protein channels Both would require active transport in order to enter the cell
Sri K.
In animal cells the intracellular concentration of K+ is much higher than in extracellular fluids. In contrast, the concentration of Na+ is much higher in extracellular fluids than inside of cells. These gradients are maintained by active transport, simple diffusion, facilitative carrier-mediated transport, ligand-activated channels, and pinocytosis.
Adi S.
If a cell were placed in a solution with a high potassium concentration and no sodium, what would happen to the sodiumpotassium pump's activity? a. It would stop moving ions across the membrane. b. It would continue using ATP to pump sodium out of the cell and potassium into the cell. c. It would move sodium and potassium ions across the membrane, but no ATP would be used. d. It would reverse the direction of sodium and potassium ions to move them against their gradients.
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