- You Have Discovered A New Species Of Animal And Study The Effect Of External Ion Concentrations On The Resting Potentia 1 (19.35 KiB) Viewed 10 times
You have discovered a new species of animal, and study the effect of external ion concentrations on the resting potential of nerve cells from this animal. The table below indicates the concentrations inside and outside the cells of a few key ions in 2 different solutions: Intracellular Na+ 6.5mM Extracellular 1 650mM 32.5mM Extracellular 2 65mM 3250MM K+ 325mM For reference, the Nernst equation Ex=60/z log10 ([X1]/[X2]) a) What is the Nernst potential for each ion in solution 1? (5 pts) b) What is the Nernst potential for each ion in solution 2? (5 pts) c) You measure a cell's resting potential in solution 1, and find that it is +72.5mV (inside with respect to outside). What is the relative conductance the cell for Na and K? (oive a number, a fraction is ok but be clear which lon has greater conductance) (5 pts)