If there are glucose transport proteins in the cell membrane, which way would
glucose flow- into or out of the cell?
Explain your answer.
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If there are glucose transport proteins in the cell membrane, which way would
glucose flow- into or out of the cell?
Explain your answer.
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Answer:
glucose flow into the cell
Explanation:
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.
Epithelial cells lining the gut need to bring glucose made available from digestion into the body and must prevent the reverse flow of glucose from body to gut. We need a mechanism to ensure that glucose always flows into intestinal cells and gets transported into the bloodstream, no matter what the gut concentration of glucose.