The correct sequence of events from the production of CO₂ in a tissue cell to its…
Biology · NEET · NTA Exams — Breathing and Exchange of Gases
The correct sequence of events from the production of CO₂ in a tissue cell to its exhalation is:
I. Transport of \(\mathrm{HCO}_{3}^{-}\) in plasma to lungs.
II. Diffusion of CO₂ from tissue cell into blood.
III. Conversion of CO₂ to \(\mathrm{HCO}_{3}^{-}\) and H⁺ in RBC.
IV. Conversion of \(\mathrm{HCO}_{3}^{-}\) back to CO₂ in pulmonary capillaries.
V. Exhalation of CO₂ from alveoli.
Choose the correct option from the following:
- II → I → III → IV → V
- II → III → I → IV → V
- III → II → I → V → IV
- I → III → II → IV → V
Answer
(B) II → III → I → IV → V
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