Expert: Walter Hintz - 10/2/2007

Question
can u please help me understand the electron flow in light reactions of photosythesis

Answer
This is difficult to answer Laura without diagrams and understanding what you already know.  Suffice to say photons are bumped up into a higher energy level in the chlorophyll molecule by a photon of light. This give sthem greater potential energy. Electron carriers them bring them back to a lower level and the energy released is used to hook phosphates onto ADP.