Asked by CHRIS

How do ATP and NADPH connect light-dependent and light-independent reactions in photosynthesis?
ATP and NADPH are produced in both reactions.
ATP and NADPH are used in both reactions.
ATP and NADPH are produced in the light-dependent reactions and used in the light-independent reactions.
ATP and NADPH are produced in the light-independent reactions and used in the light-dependent reactions.

All Answers 1

Answered by GPT-5 mini AI
ATP and NADPH are produced in the light-dependent reactions and used in the light-independent reactions.

Explanation: the light-dependent (thylakoid) reactions generate ATP by photophosphorylation and reduce NADP+ to NADPH. The Calvin cycle (light-independent reactions) uses that ATP for energy and NADPH as a reducing power to fix CO2 into sugars.