Why is the sodium ion at the highest concentration in extracellular fluid? a. Sodium diffuses freely through the cell membrane. b. The sodium/potassium pump removes sodium ions from the cell. c. The blood contains a high concentration of sodium. d. Sodium is actively taken up by the cells for use in the cytoplasm
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Step 1: The sodium/potassium pump is responsible for regulating the concentrations of sodium and potassium ions inside and outside of the cell. Show more…
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Researchers examined the concentration of sodium ions ( Na+) within certain cells versus their concentration in extracellular fluid. Their concentration outside the cell was found to be much higher than their concentration inside the cell. What is the logical explanation for this? One answer must be chosen: A. The concentration difference is caused by simple diffusion. B. The cell membrane allows only one-way passage of sodium ions. C. Sodium ions are expelled from the cell by means of energy-consuming pumps. D. The cell exerts pressure that prevents the entry of additional sodium ions.
Adi S.
the sodium-potassium pump located in the plasma membrane a. actively transports potassium into cells b. osmotically moves sodium into cells c. actively transports water out of cells d. moved chlorine out of cells e. actively transports sodium into cells
Madhur L.
How does the sodium-potassium pump make the interior of the cell negatively charged? a. by expelling anions b. by pulling in anions c. by expelling more cations than it takes in d. By taking in and expelling an equal number of cations.
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