Calculate the free energy changes at 20°C for the transmembrane movement of Na and K ions using the conditions presentedFigure 9.1. Assume the membrane potential is -70 mV. Use 3 significant figures.AG (Na) -AG (K) =kJ. mol ¹kJ mol2A Nato> K+Plasmamembrane40FIGURE 9.1 Distribution of Na' and K ions in an animal cell. The extracellular Na concentration (about 150 mM) is muchgreater than the intracellular concentration (about 12 mM), whereas the extracellular K concentration (about 4 mM) ismuch less than the intracellular concentration (about 140 mM). If the plasma membrane were completely permeable to ions,Na would flow into the cell down its concentration gradient (blue arrow) and K' would flow out of the cell down itsconcentration gradient (orange arrow).

Ions are distributed on either side of the cell membrane. The movement of ions across the membrane…

Answered: Calculate the free energy changes at…

Biochemistry

6th Edition

ISBN:9781305577206

Author:Reginald H. Garrett, Charles M. Grisham

Publisher:Reginald H. Garrett, Charles M. Grisham

Chapter32: The Reception And Transmission Of Extracellular Information

Section: Chapter Questions

Problem 14P

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Calculate the free energy changes at 20°C for the transmembrane movement of Na* and K* ions using the conditions presented Figure 9.1. Assume the membrane potential is -70 mV. Use 3 significant figures. kJ mol¹ AG (Na) AG (K) i i kJ.mol-¹