In the Proximal Tubule, Hydrogen Ions Are Transported into the Filtrate

question 94

Multiple Choice

In the proximal tubule, hydrogen ions are transported into the filtrate by

• A) Na⁺/H⁺countertransporters only.
• B) H⁺ primary active transporters only.
• C) H⁺/Cl ^- cotransporters only.
• D) both Na⁺/H⁺ countertransporters and H⁺ primary active transporters.
• E) both Na⁺/H⁺ countertransporters and H⁺/Cl ^-cotransporters.

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