2(C₅₁H₉₈O₆) + 145O₂ arrow 102CO₂ + 98H₂O + energy$2(\mathrm{C}_{51}\mathrm{H}_{98}\mathrm{O}_{6}) + 145\mathrm{O}_{2} \rightarrow 102\mathrm{CO}_{2} + 98\mathrm{H}_{2}\mathrm{O} + \text{energy}$ The Respiratory Quotient (RQ) of a biomolecule used for respiration, as per the above equation would be :

Core Logic

• Glycolysis (A) is the first step of cellular respiration and occurs entirely in the cytoplasm (A-III).
• Electron Transport System (B) components are embedded within the inner mitochondrial membrane (B-I).
• Accumulation of protons (C) during ETS creates a gradient in the intermembrane space of the mitochondria (C-IV).
• Krebs' cycle (D) reactions are catalyzed by enzymes located in the mitochondrial matrix (D-II).

Step 1: Final Conclusion

The correct matches are A-III, B-I, C-IV, D-II.

Pattern Recognition

Glycolysis = Cytoplasm (A-III) is the most basic biological fact here. Only one option (option 2) starts with A-III. Instant elimination.

Chapter Mix

Class 11 Biology: Respiration in Plants