Glucose enters erythrocytes via a GLUT-1 uniporter.As the levels of glucose in the bloodstream decrease between meals,what happens to the glucose in the cells?
A)Glucose leaves the cell through the GLUT-1 uniporter,traveling down the new concentration gradient.
B)Glucose remains in the cell because uniporters can only transport in one direction.
C)Glucose remains in the cell because the GLUT-1 uniporters are gated and the gates close at low glucose concentrations.
D)Glucose remains in the cell because it has been phosphorylated and no longer has affinity for the GLUT-1 uniporter.

Question

Quizplus · Accepted Answer

Glucose is phosphorylated to glucose-6-phosphate inside the cell, which prevents it from being transported out by the GLUT-1 uniporter.

Glucose Enters Erythrocytes Via a GLUT-1 Uniporter