Intestinal epithelial cells pump glucose into the cell against its concentration gradient using the Na+– glucose symporter. Recall that the Na+ concentration is significantly higher outside the cell than inside the cell. The symporter couples the "downhill" transport of two Na+ ions into the cell to the "uphill" transport of glucose into the cell. If the Na+ concentration outside the cell ([Na+]out) is 163 mM and that inside the cell ([Na+]in) is 21.0 mM, and the cell potential is −54.0 mV (inside negative), calculate the maximum energy available for pumping a mole of glucose into the cell. Assume the temperature is 37 °C. Answer in kJ/mol.
Intestinal epithelial cells pump glucose into the cell against its concentration gradient using the Na+– glucose symporter. Recall that the Na+ concentration is significantly higher outside the cell than inside the cell. The symporter couples the "downhill" transport of two Na+ ions into the cell to the "uphill" transport of glucose into the cell. If the Na+ concentration outside the cell ([Na+]out) is 163 mM and that inside the cell ([Na+]in) is 21.0 mM, and the cell potential is −54.0 mV (inside negative), calculate the maximum energy available for pumping a mole of glucose into the cell. Assume the temperature is 37 °C. Answer in kJ/mol.
Chapter11: Properties Of Solutions
Section: Chapter Questions
Problem 109AE: Patients undergoing an upper gastrointestinal tract laboratory test are typically given an X-ray...
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Intestinal epithelial cells pump glucose into the cell against its concentration gradient using the Na+–
glucose symporter. Recall that the Na+
concentration is significantly higher outside the cell than inside the cell. The symporter couples the "downhill" transport of two Na+
ions into the cell to the "uphill" transport of glucose into the cell.
If the Na+
concentration outside the cell ([Na+]out)
is 163 mM
and that inside the cell ([Na+]in)
is 21.0 mM,
and the cell potential is −54.0 mV
(inside negative), calculate the maximum energy available for pumping a mole of glucose into the cell. Assume the temperature is 37 °C.
Answer in kJ/mol.
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