Which of the Following Sequences Correctly Represents the Flow of Electrons

Question

Which of the following sequences correctly represents the flow of electrons during photosynthesis?
A) NADPH → O₂ → CO₂
B) H₂O → NADPH → Calvin cycle
C) NADPH → chlorophyll → Calvin cycle
D) H₂O → photosystem I → photosystem II
E) NADPH → electron transport chain → O₂

Accepted Answer

In photosynthesis, water (H₂O) is split in the light-dependent reactions to provide electrons, which are then used to reduce NADP+ to NADPH. NADPH is subsequently utilized in the Calvin cycle to help convert CO₂ into glucose. This sequence correctly represents the flow of electrons during the process.