Oxygen, released into the atmosphere, comes from:
Correct answer: B. H2O
- A. CO2
- B. H2O
- C. C6H12O6
- D. CO2 and H2O
Explanation
Oxygen released into the atmosphere during photosynthesis comes from the splitting of water molecules. The oxygen-evolving complex in the thylakoid membrane of chloroplasts is responsible for catalyzing the light-dependent reactions of photosynthesis, where water molecules are split into oxygen, protons (H⁺ ions), and electrons.
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