Which Is NOT a Transport Mechanism Typically Seen in Renal

question 23

Multiple Choice

Which is NOT a transport mechanism typically seen in renal tubular epithelial cells?

• A) cotransport proteins in the luminal membrane of the proximal tubule that move Na⁺ and glucose from the proximal tubule into epithelial cells
• B) transport proteins that move glucose by facilitated diffusion from inside of proximal tubule cells into the renal interstitial fluid
• C) ion channels that allow Na⁺ to move by diffusion from the lumen of the proximal tubule into epithelial cells
• D) Na⁺-K⁺ ATPase pumps in the luminal membrane of proximal tubule epithelial cells that move Na⁺ from inside the cell into the tubule and K⁺ from the tubule lumen into the cell
• E) countertransport proteins that move Na⁺ into proximal tubule epithelial cells while moving H⁺ from the cells into the lumen

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