Question

Place the events of the light-dependent reactions of photosynthesis in the correct order. question 2 options: atp is formed as hydrogen ions move down their concentration gradient through the atp synthase molecule an electron passes down the electron transport chain and nadph is formed along the way water is split photons are absorbed by chlorophyll hydrogen ions are pumped against their concentration gradient

Answer 1

Events of light-dependent reactions of photosynthesis; 
Photons are absorbed by chlorophyll
Water is split into oxygen and hydrogen ions
An electron passes down the electron transport chain, as the hydrogen ions move down their concentration gradient NADPH is formed along the way
Hydrogen ions are pumped against their concentration gradient through the ATP synthase molecule and ATP is formed.