Biochemistry:

The Na+âK+ ATPase uses the free energy of ATP hydrolysis in an active transport process to move Na+ and K+ across a membrane. What would the rate of non mediated transport be given that the permeability coefficient for K+ through a human erythrocyte membrane is 2.4 x 10-10 cm/s? K+ ions must be moved from a concentration of 4mM on the outside of the cell to 155mM inside the cell?

Note 1: J= -P(C2-C1)

Note 2: A substance cannot move a negative distance. The negative sign in Fick's Law above indicates that the substance is moving against the concentration gradient.

Question

Biochemistry: The Na+âK+ ATPase uses the free energy of ATP hydrolysis in an active transport process to move Na+ and K+ across a membrane. What would the rate of non mediated transport be given that the permeability coefficient for K+ through a human erythrocyte membrane is 2.4 x 10-10 cm/s? K+ ions must be moved from a concentration of 4mM on the outside of the cell to 155mM inside the cell? *Note 1: J= -P(C2-C1) *Note 2: A substance cannot move a negative distance. The negative sign in Fick's Law above indicates that the substance is moving against the concentration gradient.

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