The overall reaction of aerobic respiration is
ACO₂ + H₂O + light → glucose + O₂
Bglucose + O₂ → CO₂ + H₂O + energy
Cglucose + CO₂ → starch + H₂O
DO₂ + N₂ → 2 NO + energy
Answer & Solution
Correct answer: B. glucose + O₂ → CO₂ + H₂O + energy
Aerobic respiration is the reverse of photosynthesis at the summary level: glucose + 6 O₂ → 6 CO₂ + 6 H₂O + energy. Photosynthesis stores energy in glucose; respiration releases it back. The first option is photosynthesis; option D is industrial nitrogen oxidation.
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