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When one $CO_2$ molecule is fixed as one molecule of triose phosphate, which of the following photochemically made, high energy chemical intermediates are used in the reduction phase?
Detailed Solution
In the reduction phase, fixing one molecule of $CO_2$ (reduction of the 3-PGA formed) uses 2 ATP and 2 NADPH. The third ATP per $CO_2$ is used in the regeneration of RuBP.