Question

Assuming that there are glucose transport proteins in the cell membrane, which way

would glucose flow-into or out of the cell? Explain your answer.

Answer 1

Whether a cell uses facilitated diffusion or active transport depends on the specific needs of the cell. For example, the sugar glucose is transported by active transport from the gut into intestinal epithelial cells, but by facilitated diffusion across the membrane of red blood cells. Why? Consider how different these two environments are.