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Which one of the following concerns photophosphorylation?

1. AMP + Inorganic PO4 Light energy → ATP
2. ADP + AMP Light energy → ATP
3. ADP + Inorganic PO4 Light energy → ATP
4. ADP + Inorganic PO4 → ATP

Correct answer: ADP + Inorganic PO4 Light energy → ATP

Solution

Photophosphorylation is the synthesis of ATP in photosynthetic organisms using light energy. It specifically combines ADP and inorganic phosphate (Pi) to form ATP, so the option with ADP + inorganic PO4 + light energy is correct.

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