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Stella [2.4K]
3 years ago
5

How are the electrons in the PS II system replaced?

Biology
1 answer:
dimaraw [331]3 years ago
6 0

Answer: Photosystem I obtains replacement electrons from the electron transport chain. ATP provides the energy and NADPH provides the hydrogen atoms needed to drive the subsequent photosynthetic dark reaction, or Calvin cycle.

Explanation:

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