What happens during regeneration phase in photosynthesis

Answer 1

During the regeneration phase of photosynthesis, the energy that was captured and stored during the light-dependent reactions is used to convert ADP (adenosine diphosphate) back into ATP (adenosine triphosphate), and NADP+ (nicotinamide adenine dinucleotide phosphate) back into NADPH. This phase takes place in the stroma of the chloroplasts.

The ATP and NADPH are then used to convert carbon dioxide (CO2) molecules into glucose, a process known as the Calvin cycle or the dark reactions. This phase involves a series of enzyme-catalyzed reactions, such as carbon fixation, reduction, and regeneration of RuBP (ribulose-1,5-bisphosphate). The ATP and NADPH provide the energy and reducing power needed for these reactions.

The glucose produced during the regeneration phase can be used for immediate energy needs or stored as starch for later use. Additionally, the glucose can be converted into other organic molecules, such as carbohydrates, lipids, and proteins, to support plant growth and development.