Physiology & Biochemistry · single question

How is CO₂ primarily transported from tissues back to the lungs?

  1. Dissolved in plasma
  2. Bound to hemoglobin
  3. As carbonic acid via carbonic anhydrase
  4. As bicarbonate ions (HCO₃⁻)
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Correct answer: C. As carbonic acid via carbonic anhydrase

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