What are the main products of the non-cyclic electron transport during the light reactions?

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Multiple Choice

What are the main products of the non-cyclic electron transport during the light reactions?

In the non-cyclic (linear) light reactions, light energy drives electrons from water all the way to NADP+, producing NADPH and releasing oxygen as a byproduct. Water splitting at photosystem II supplies electrons and releases O2. As electrons move through the electron transport chain, protons are pumped into the thylakoid lumen, creating a gradient that ATP synthase uses to generate ATP. The electrons finally reduce NADP+ to NADPH via ferredoxin-NADP+ reductase. So the main products are NADPH, ATP, and O2. (If electrons followed a cyclic path, you’d get ATP without NADPH or O2.)

In the non-cyclic (linear) light reactions, light energy drives electrons from water all the way to NADP+, producing NADPH and releasing oxygen as a byproduct. Water splitting at photosystem II supplies electrons and releases O2. As electrons move through the electron transport chain, protons are pumped into the thylakoid lumen, creating a gradient that ATP synthase uses to generate ATP. The electrons finally reduce NADP+ to NADPH via ferredoxin-NADP+ reductase. So the main products are NADPH, ATP, and O2. (If electrons followed a cyclic path, you’d get ATP without NADPH or O2.)

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