how are atp and nadph produced during the light reactions? what is an electron transport chain (etc)?

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15-12-2022
Biology

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how are atp and nadph produced during the light reactions? what is an electron transport chain (etc)?

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rafikiedu17 rafikiedu17 · Answer 1 · 2022-12-19T12:56:48-05:00

This is accomplished by the use of two different photosystems in the light reactions of photosynthesis, one to generate ATP and the other to generate NADPH. Electrons are transferred sequentially between the two photosystems, with photosystem I acting to generate NADPH and photosystem II acting to generate ATP.

The high-energy electron travels down a short second leg of the electron transport chain. At the end of the chain, the electron is passed to NADP +start superscript, plus, end superscript (along with a second electron from the same pathway) to make NADPH.

The light-dependent reactions take place in the thylakoid membrane. They require light, and their net effect is to convert water molecules into oxygen while producing ATP molecules from ADP and Pi and NADPH molecules via the reduction of NADP+.

Learn more about NADPH here

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