Question

Shown in the figure is a sketch of gut epithelial cells. The cells move glucose from the lumen of the gut across thei apical surface and into the cell, and then into the extracellular fluid/blood supply via their basal surface. Using the information in the figure, what type of transporter could be used to move glucose from: 1. The lumen into the cell (and if it requires energy, what is the energy source?). 2. The cell into the extracellular fluid (and if it requires energy, what is the energy source?). Be sure to include the role of the glucose concentration in the type of transporter in your answer. Lumen of the gut Apical surface Glucose 5 M Na 150 M Glucose 45 MM 15 Mm Na Basa Surface Glucose Na 150

Answer 1

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