-Based on the figure above, which of these experimental treatments would increase the rate of sucrose transport into the cell?
A) decreasing extracellular sucrose concentration
B) decreasing extracellular pH
C) decreasing cytoplasmic pH
D) adding an inhibitor that blocks the regeneration of ATP
E) adding a substance that makes the membrane more permeable to hydrogen ions

Question

-Based on the figure above, which of these experimental treatments would increase the rate of sucrose transport into the cell?
A) decreasing extracellular sucrose concentration 
B) decreasing extracellular pH 
C) decreasing cytoplasmic pH 
D) adding an inhibitor that blocks the regeneration of ATP 
E) adding a substance that makes the membrane more permeable to hydrogen ions

Quizplus · Accepted Answer

Decreasing extracellular pH increases the concentration of hydrogen ions outside the cell, which can enhance the proton gradient. This gradient is often used by sucrose transporters (such as sucrose-H+ symporters) to drive the active transport of sucrose into the cell.

-Based on the Figure Above, Which of These Experimental Treatments