How many ATP molecules are required to pump 23 Ca-+ ions out of a cell when the cytoplasmic concentration of Ca2* is 193 nM, the extracellular concentration 587 µM, and the membrane potential is constant 100 mV inside negative? Assume T = 298 K, AG (ATP hydrolysis)= - 45 kJ/mol.

How many ATP molecules are required to pump 23 Ca-+ ions out of a cell when the cytoplasmic concentration of Ca2* is 193 nM, the extracellular concentration 587 µM, and the membrane potential is constant 100 mV inside negative? Assume T = 298 K, AG (ATP hydrolysis)= - 45 kJ/mol.

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter4: Principles Of Neural And Hormonal Communication

Section: Chapter Questions

Problem 3SQE

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How many ATP molecules are required to pump 23 Ca-+
ions out of a cell when the
cytoplasmic concentration of Ca2* is 193 nM, the extracellular concentration 587 µM, and
the membrane potential is constant 100 mV inside negative? Assume T = 298 K, AG (ATP
hydrolysis)= - 45 kJ/mol.

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