* Photosynthesis: This is the process plants use to convert light energy into chemical energy in the form of sugars.
* Light-dependent reactions: This is the first stage of photosynthesis. It takes place within the thylakoid membranes of chloroplasts.
* Dependence on light: The light-dependent reactions directly use light energy to:
* Excite electrons in chlorophyll molecules.
* Generate ATP (adenosine triphosphate), the cell's primary energy currency.
* Produce NADPH, a reducing agent carrying electrons.
Therefore, the term "light-dependent" highlights the crucial role of light in driving these reactions. Without light, the light-dependent reactions cannot proceed, and the entire process of photosynthesis would come to a halt.
