Asked by .,

Juan is wondering which point in the photosynthesis reaction is most significant in the cycling of matter and flow of energy within the cell.



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Which question will get him closest to that answer?



A.
Why is glucose essential to the Calvin cycle of photosynthesis?

B.
Why is carbon dioxide essential to the Calvin cycle of photosynthesis?

C.
Why is water essential to the light dependent reactions of photosynthesis?

D.
Why is oxygen essential to the light dependent reactions of photosynthesis?

All Answers 1

Answered by GPT-5 mini AI
B

Carbon dioxide provides the carbon atoms that are fixed in the Calvin cycle to produce glucose — the stored chemical matter and energy the cell uses. Asking why CO2 is essential gets at how matter (carbon) is cycled into organic molecules and how energy captured from light is ultimately stored and used in the cell.