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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 143 mM and that inside the cell ([Na* lin) is 19.0 mM, and the cell potential is -53.0 mV (inside negative), calculate the maximum energy available for pumping a mole of glucose into the cell. Assume the temperature is 37 °C. AGgluc = kJ mol What is the maximum ratio of [glucose] in to [glucose]out that could theoretically be produced if the energy coupling were 100% efficient? 3.3 x 10-4 1.13 3.0 x 10³ 8.01

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 143 mM and that inside the cell ([Na* lin) is 19.0 mM, and the cell potential is -53.0 mV (inside negative), calculate the maximum energy available for pumping a mole of glucose into the cell. Assume the temperature is 37 °C. AGgluc = kJ mol What is the maximum ratio of [glucose] in to [glucose]out that could theoretically be produced if the energy coupling were 100% efficient? 3.3 x 10-4 1.13 3.0 x 10³ 8.01

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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estion 5 of 15 > Intestinal epithelial cells pump glucose into the cell against its concentration gradient using the Nat-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. AGgluc If the Na+ concentration outside the cell ([Na+]out) is 143 mM and that inside the cell ([Na+]in) is 19.0 mM, and the cell potential is -53.0 mV (inside negative), calculate the maximum energy available for pumping a mole of glucose into the cell. Assume the temperature is 37 °C. = kJ mol Attempt 14 What is the maximum ratio of [glucose] in to [glucose lout that could theoretically be produced if the energy coupling were 100% efficient? 3.3 x 10-4 O 1.13 3.0 × 10³ 8.01
Transcribed Image Text:estion 5 of 15 > Intestinal epithelial cells pump glucose into the cell against its concentration gradient using the Nat-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. AGgluc If the Na+ concentration outside the cell ([Na+]out) is 143 mM and that inside the cell ([Na+]in) is 19.0 mM, and the cell potential is -53.0 mV (inside negative), calculate the maximum energy available for pumping a mole of glucose into the cell. Assume the temperature is 37 °C. = kJ mol Attempt 14 What is the maximum ratio of [glucose] in to [glucose lout that could theoretically be produced if the energy coupling were 100% efficient? 3.3 x 10-4 O 1.13 3.0 × 10³ 8.01
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