Nernst & Goldman Worksheet - Answer Key

# Nernst & Goldman Worksheet - Answer Key - Name:

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Unformatted text preview: Name: _____________________________ Lab Section (circle): 1pm 3pm ECOL 437 Spring 2010 Bonine and Maynard 27 January 2010 Due in Discussion on 2.3.10 Answer Key - Membrane Potentials, Ion Movements, Action Potentials (feel free to consult your text) 1a. Use the Nernst equation to calculate the equilibrium membrane potential for potassium ions if the concentration outside the cell is 20mM and the concentration inside the cell is 300mM. E K+ = (58/+1)[log(20mM/300mM)] = -68.2mV 1b. Use the Nernst equation to calculate the equilibrium membrane potential for calcium ions if the concentration outside the cell is 20mM and the concentration inside is 3mM. E Ca2+ = (58/+2)[log(20mM/3mM)] = 23.89mV 1c. Use the Nernst equation to calculate the equilibrium membrane potential for chloride ions if the concentration outside the cell is 50mM and the concentration inside is 2mM. E Cl- = (58/-1)[log(50mM/2mM)] = -81.1mV 1d. If the resting membrane potential is -60mV, which way (in or out of the cell) will potassium want to 1d....
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## This note was uploaded on 03/10/2010 for the course MCB 473 taught by Professor Putnum during the Spring '07 term at Arizona.

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Nernst & Goldman Worksheet - Answer Key - Name:

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