Answer :
Final answer:
ATP is directly needed to produce both triose phosphates and RuBP in the photosynthesis process, where it is involved in converting RuBP and CO2 into G3P, and regenerating RuBP from G3P.
Explanation:
The answer to your question, "Which of the following is needed directly to produce both triose phosphates and RuBP?" is D) ATP. The production of triose phosphates (G3P) and RuBP (ribulose-1,5-bisphosphate) both involve ATP. During photosynthesis, in the light-independent reactions, ATP and NADPH produced in the light-dependent reactions help convert CO2 and RuBP into G3P. Moreover, ATP also facilitates the regeneration of RuBP from G3P which enables the continuation of the carbon fixation process.
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