What is the free-energy cost of pumping Ca2+ out of a cell when the cytoplasmic concentration is

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What is the free-energy cost of pumping Ca2+ out of a cell when the cytoplasmic concentration is 0.15 μM, the extracellular concentration is 3.5 mM, and the membrane potential is 40 mV (inside negative)? (Assume temperature is 37oC, R= 8.315 J/mol-oK and F=96,500 J/V.mol)
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Biochemistry Concepts and Connections

ISBN: 978-0321839923

1st edition

Authors: Dean R. Appling, Spencer J. Anthony Cahill, Christopher K. Mathews

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