Carbonic anhydrase in the kidney tubular cells is known to be associated with_____________?
Correct answer: B. Bicarbonate ion
- A. Urea
- B. Bicarbonate ion
- C. Chloride
- D. Carbohydrate
Explanation
Carbonic anhydrase catalyses the reversible reaction between carbon dioxide and water, generating carbonic acid and ultimately bicarbonate in tubular cells. This reaction is central to bicarbonate reabsorption and hydrogen ion secretion.
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