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.
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Step 1: The concentration of sodium ions outside the cell is much higher than inside the cell. Show more…
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Adi S.
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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