Question

Which of the following correctly tracks the flow of electrons in the Light Reaction?

A Water, Photosystem I, Cytochrome, shuttle Photosystem II, shuttle, NADP+
B Water, Photosystem II, shuttle, Cytochrome, shuttle, Photosystem I, shuttle, NADPH reductase, NADP+
C Photosystem L, shuttle, water, Cytochrome, Photosystem II,
D shuttle, NADPH Reductase, NADP+ Shuttle, Photosystem II, shuttle, Photosystem I, Cytochrome, water, NADP+

Answer 1

The correct sequence of electron flow in the Light Reaction is water, Photosystem II, shuttle, Cytochrome, Photosystem I, shuttle, NADPH reductase, NADP+.

Step-by-step explanation:

The correct sequence of electron flow in the Light Reaction is:

1. Water
2. Photosystem II
3. Shuttle
4. Cytochrome
5. Photosystem I
6. Shuttle
7. NADPH reductase
8. NADP+

During the Light Reaction, energy from sunlight is used to extract electrons from water. These electrons then travel through the chloroplast electron transport chain, starting with Photosystem II. The electrons are transferred to a shuttle molecule and then to Cytochrome. Next, the electrons move to Photosystem I and then to another shuttle molecule. Finally, the electrons are transferred to NADPH reductase and combine with NADP+ to form NADPH.