Which of the following is carrying energized electrons produced by the light reactions?Group of answer choicesG3PNADHNADP⁺chlorophyll bNADPHchlorophyll aNAD⁺Next
Question
Which of the following is carrying energized electrons produced by the light reactions?Group of answer choicesG3PNADHNADP⁺chlorophyll bNADPHchlorophyll aNAD⁺Next
Solution
The molecule that carries energized electrons produced by the light reactions in photosynthesis is NADPH.
Here's a step-by-step explanation:
- In the light-dependent reactions of photosynthesis, light energy is converted into chemical energy.
- This energy is used to produce ATP and to reduce NADP+ to NADPH.
- NADPH is a high-energy molecule that carries energized electrons. These electrons are produced when light energy is absorbed by chlorophyll and other pigments, and transferred through a series of protein complexes - collectively known as the electron transport chain.
- The energized electrons reduce NADP+ to NADPH.
- NADPH then carries these high-energy electrons to the light-independent reactions (Calvin cycle), where they are used to convert carbon dioxide into glucose.
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