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Light Reaction in photosynthesis occurs in the thylakoids found in chloroplasts. here are summarized process:

1. light energy strikes chlorophyll bodies and electrons get excited.

2. electrons NADP+ and H+ join together to form NADPH in the elctron transport chain.


3. light hits a second chlorophyll molecule and splits the water molecule into hydrogen and oxygen. OXygen is released into the atmosphere and hydrogen ions are added.

4. more H+ is carried by the electron transport chain.
5. Energy is generated for the formation of ATP. to summarize, the light reaction results in the A. production of ATP, a high energy molecule, and NADPH for use in the dark reaction phase; and B. production of oxygen which is released into the atmosphere.
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