5) a) Typical Mg²+ concentrations in blood plasma are 2.2mM. If the transmembrane po- tential across the cell membrane is -90mV (negative inside), calculate the equilibrium con- centration of Mg²+ inside the red blood cell at 37°C. b) Consider the difference in electrochemical potential inside vs outside the cell, Ateieefchem = Helecejchem (inside) – Hadee/chem(outside). As discussed in class, this difference is written as a chemical and electrical contribution, Aµteefchem = AHchem + Aftelec: For the red blood cell at equilibrium, state whether Aetee/chem, Afchem, and Aµrdee are greater than, less than, or equal to zero, and explain your answer.

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5) a) Typical Mg²+ concentrations in blood plasma are 2.2mM. If the transmembrane po-
tential across the cell membrane is -90mV (negative inside), calculate the equilibrium con-
centration of Mg²+ inside the red blood cell at 37°C.
b) Consider the difference in electrochemical potential inside vs outside the cell, Aµreleefchem
Helece/chem (inside) – Helec/chem(outside). As discussed in class, this difference is written as a
chemical and electrical contribution, Afdee/chem = Aflchem + Atelec: For the red blood cell
at equilibrium, state whether Atelee/chem; Atchem, and Aftelec are greater than, less than, or
equal to zero, and explain your answer.
Transcribed Image Text:5) a) Typical Mg²+ concentrations in blood plasma are 2.2mM. If the transmembrane po- tential across the cell membrane is -90mV (negative inside), calculate the equilibrium con- centration of Mg²+ inside the red blood cell at 37°C. b) Consider the difference in electrochemical potential inside vs outside the cell, Aµreleefchem Helece/chem (inside) – Helec/chem(outside). As discussed in class, this difference is written as a chemical and electrical contribution, Afdee/chem = Aflchem + Atelec: For the red blood cell at equilibrium, state whether Atelee/chem; Atchem, and Aftelec are greater than, less than, or equal to zero, and explain your answer.
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