Which of the following is carrying energized electrons produced by the light reactions?Group of answer choicesNADHNAD⁺NADP⁺G3PNADPHchlorophyll bchlorophyll a
Question
Which of the following is carrying energized electrons produced by the light reactions?
- NADH
- NAD⁺
- NADP⁺
- G3P
- NADPH
- chlorophyll b
- chlorophyll a
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 carrier molecule, which means it accepts and holds 2 high-energy electrons along with a hydrogen ion (H⁺). This allows it to carry the energized electrons that are produced in the light reactions.
- These high-energy electrons carried by NADPH are then used in the light-independent reactions (Calvin cycle) to produce glucose from carbon dioxide.
So, the answer is NADPH.
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