Which Events Take Place In Light-Dependent Reactions Of Photosynthesis?

1.    CO2 fixation using the Calvin Cycle
2.     Electron transport and ATP generation
3.     Splitting of water molecules and oxygen release
4.     All of the above

Answer: (4) All of the above

Explanation

The light-dependent reactions uses light energy to:

• Split water molecules (photolysis): releasing oxygen as a byproduct
• Generate ATP and NADPH: through electron transport across the thylakoid membrane
• Provide an excited electron: used for the regeneration of RuBP in the Calvin Cycle