9) How long would it take 100 molecules of valinomycin to transport enough K+ to change the concentration inside an erythrocyteof volume 100um3by10 mM? (Assume that valinomycin does not also transport any K+ out of the cell, which it really does, and that valinomycin molecules outside the cell are always saturated with K+.)

Time required for 100 molecules of valinomycin to transport enough to change the concentration inside an erythrocyte is 10 minutes.

Explanation:

The given data is as follows.

 Ions to be transported =

            =

             =  ions

Here, there are 100 ionophores are present and each one of ionophores are required to transport a value of  ions.

Therefore, the time required for 100 molecules of valinomycin to transport enough to change the concentration inside an erythrocyte is as follows.

              = 602 sec

or,          = 10 minutes        (as 1 min = 60 sec)

Thus, we can conclude that time required for 100 molecules of valinomycin to transport enough to change the concentration inside an erythrocyte is 10 minutes.