Put the steps of the light reactions in the correct order

1. Light energy is transferred to a chlorophyll reaction center where electrons become energized.

2. Electrons from the electron transport chain close to photosystem Il replace the electrons lost in photosystem

3. H+ ions flow down the concentration gradient through a channel in ATP in Synthase, releasing energy in the process

4. Electrons move to an electron acceptor in the electron transport chain and electrons in photosystem II are replaced by the splitting of water molecule

5. Photosystem I receives photons in the form of light energy

6. Water is split to replace the electrons in photosystem II

7. Electrons from Photosystem become energized and escape photosystem and move down the second electron transport chain.

8. Electrons move down the electron transport chain, releasing energy

9. A protein in the electron transport chain, pumps Ht ions from the stroma into the thylakoid space

10. At the end of the electron transport chain, the energized electrons and an H+ ion are used to reduce NADP+ to NADPH

11. ATP uses energy to add a phosphate to ADP forming ATP