Transport of Gases — Predicted 2026

AI-Predicted Question Angles for UPSC 2026

Based on trend analysis, current affairs, and recurring themes in Transport of Gases.

Integrated understanding of Bohr and Haldane effects

high

NEET often tests the ability to differentiate and integrate related concepts. Questions might ask about the reciprocal nature of the Bohr and Haldane effects, or how they synergistically optimize gas exchange at both tissue and lung levels. A scenario-based question describing conditions in a metabolically active tissue and asking about the combined impact on O\_2 and CO\_2 transport is highly probable. Students need to understand not just what each effect is, but how they work together.

Quantitative aspects of gas transport percentages

medium

While not numerical problems, questions asking for the approximate percentages of O\_2 and CO\_2 transported in different forms (e.g., 'What percentage of O\_2 is transported as oxyhaemoglobin?') are common. These test basic factual recall but are crucial for understanding the relative importance of each mechanism. A table-based MCQ asking to match transport form with its percentage contribution is a likely format.

Role of carbonic anhydrase and chloride shift in acid-base balance

medium

Beyond just gas transport, the conversion of CO\_2 to bicarbonate and the subsequent buffering of H$^+$ by haemoglobin, along with the chloride shift, play a vital role in maintaining blood pH. Questions could link the efficiency of CO\_2 transport to acid-base regulation, asking about the consequences of impaired carbonic anhydrase activity or a dysfunctional chloride shift on blood pH. This tests a deeper, integrated understanding of physiology.