Chapter 10: 18P (page 319)
How long would it take 100 molecules of valinomycin to transport enough K+ to change the concentration inside an erythrocyte of volume 100 µm3 by 10 mM? (Assume that the valinomycin does not also transport any K+ out of the cell, which it really does, and that the valinomycin molecules outside the cell are always saturated withK+.)
Short Answer
The time taken by 100 molecules of Valinomycin to transport enough K+ ions to change the concentration inside an erythrocyte is 10 mins.