These two stages of photosynthesis are known as the (the photo part of photosynthesis) and the (the synthesis part) (FIGURE 10-4).
Photosystem I makes use of an to collect light energy for the second stage of . It collects energetic electrons from the first stage process which is powered through and uses the light energy to further boost the energy of the electrons toward accomplishing the final goal of providing energy in the form of to the .
What happens during the first stage of Photosynthesis
Photosynthesis occurs in two stages. These stages are called the light reactions and the dark reactions. The light reactions take place in the presence of light. The dark reactions do not require direct light, however dark reactions in most plants occur during the day.