The following figure shows the solute composition of a cell and its extracellular fluid.

The following figure shows the solute composition of a cell and its extracellular fluid. Question mark (Neutral Face) represents unknown concentrations.
 Question mark (Neutral Face) represents unknown concentrations.

a. What is the concentration of K+ inside the cell?
b. if the cell is in the steady state, what concentration of non-electrolyte must be present outside the cell?
c. Chloride ions are passively distributed across the cell membrane. What is the membrane potential? (hint: using the Nernst equation)
d. What is the K+ equilibrium potential? Is it the same as the membrane potential. If not, explain.

FIGURE:

ECF CONTAINS:

Na+  =  140mM
K+    =  5mM
Cl-    =  145mM
Imperm. Non electrolyte = ???mM

ICF CONTAINS:

Na+ = 20mM
K+   = ?? mM
Cl-   =  5 mM
   A- (imperm. Annion) = 165mM

Post Merge: 7 years ago

can anyone provide answers plz