In the light-dependent reactions, which take place at the thylakoid membrane, chlorophyll absorbs energy from sunlight and then converts it into chemical energy with the use of water. The light-dependent reactions release oxygen as a byproduct as water is broken apart.Click to see full answer. Herein, what are the 7 steps of light dependent reactions? Terms in this set (7) (1st Time) Energy is absorbed from the sun. Water is broken down. Hydrogen ions are transported across the thylakoid membrane. (2nd Time) Energy is absorbed from the sun. NADPH is produced from NADP+. Hydrogen ions diffuse through the protein channel. Subsequently, question is, what are the products of light dependent reactions? The two products of the light-dependent reactions of photosystem are ATP and NADPH. The movement of high energy electrons releases the free energy that is needed to produce these molecules. The ATP and NADPH are used in the light-independent reactions to make sugar. Moreover, what happens in the light dependent reactions quizlet? Require light to grow, it also use energy from light to produce oxygen gas and convert ADP and NADP into energy carriers ATP and NADPH. Light is absorbed by photosystem II breaking up water molecules into energized electrons, hydrogen ions and oxygen.What is the first step in light dependent reactions?The overall function of light-dependent reactions, the first stage of photosynthesis, is to convert solar energy into chemical energy in the form of NADPH and ATP, which are used in light-independent reactions and fuel the assembly of sugar molecules.