14. The photons of light excite electrons and jump alone the electron transport chain (ETC), pumping protons and ions into the lumen, producin V [ Select] NADPH and FADH

The correct answer is ATP.<br /><br />The process you are describing is part of the light-dependent reactions of photosynthesis. During this process, the photons of light excite electrons in the chlorophyll molecules. These excited electrons then move through the electron transport chain (ETC), which is located in the thylakoid membrane of the chloroplasts.<br /><br />As the electrons move through the ETC, they release energy, which is used to pump protons (H+) and other ions into the lumen (the inner space) of the thylakoid. This creates a difference in proton concentration between the thylakoid lumen and the stroma (the fluid surrounding the thylakoid).<br /><br />The movement of protons back into the stroma through a protein complex called ATP synthase generates ATP from ADP and inorganic phosphate. This process is known as chemiosmosis.<br /><br />In addition to ATP, the light-dependent reactions also produce NADPH, which is another energy-rich molecule used in the Calvin cycle (the light-independent reactions) to synthesize glucose from carbon dioxide.<br /><br />So, the complete answer is:<br /><br />The photons of light excite electrons and jump alone the electron transport chain (ETC), pumping protons and ions into the lumen, producing ATP and NADPH.