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NEETZoologyBreathing and Exchange of Gases

Read the following statements and choose the follwoing option: 1. Carbonic anhydrase produces bicarbonate from oxygen 2. Plasma lacks carbonic anhydrase 3. CO2 trapped as bicarbonate is released out as CO2 4. Asthma is a chronic disorder in which alveolar walls are damaged

Options

  1. AOnly 2 is correct
  2. BOnly 3 is correct
  3. CBoth 1 and 3 is correct
  4. DOnly 1 is correct

Correct answer

B. Only 3 is correct

Step-by-step solution

At the alveolar site where pCO2 is low, the reaction proceeds in the opposite direction leading to the formation of CO2 and H2O. Thus, CO2 trapped as bicarbonate at the tissue level and transported to the alveoli is released out as CO2.

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