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*lout) is 149 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. kJ What is the maximum ratio of [glucose];n [glucose]out AGgluc = mol that could theoretically be produced if the energy coupling were 100% efficient? 3.5 x 10–4 7.96 2900 1.13 O O O
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*lout) is 149 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. kJ What is the maximum ratio of [glucose];n [glucose]out AGgluc = mol that could theoretically be produced if the energy coupling were 100% efficient? 3.5 x 10–4 7.96 2900 1.13 O O O
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Chapter1: Chemical Foundations
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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*lout) is 149 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.
kJ
What is the maximum ratio of [glucose];n
[glucose]out
AGgluc =
mol
that could theoretically be produced if the energy coupling
were 100% efficient?
3.5 x 10–4
7.96
2900
1.13
O O O](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F90ac9d08-3090-4bc8-87bd-3db7bcd2bcf9%2Fe40e8a4d-ed0e-4f13-ab4e-8f377f603807%2Feczmgx4l.png&w=3840&q=75)
Transcribed Image Text: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*lout) is 149 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.
kJ
What is the maximum ratio of [glucose];n
[glucose]out
AGgluc =
mol
that could theoretically be produced if the energy coupling
were 100% efficient?
3.5 x 10–4
7.96
2900
1.13
O O O
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