<P> Within the stroma are grana, stacks of thylakoids, the sub-organelles, the daughter cells, where photosynthesis is commenced before the chemical changes are completed in the stroma . </P> <P> Photosynthesis occurs in two stages . In the first stage, light - dependent reactions capture the energy of light and use it to make the energy - storage molecules ATP and NADPH . During the second stage, the light - independent reactions use these products to capture and reduce carbon dioxide . </P> <P> The series of biochemical redox reactions which take place in the stroma are collectively called the Calvin cycle or light - independent reactions . There are three phases: carbon fixation, reduction reactions, and ribulose 1, 5 - bisphosphate (RuBP) regeneration . </P> <P> The stroma is also the location of chloroplast DNA and chloroplast ribosomes, and thus also the location of molecular processes including chloroplast DNA replication, and transcription / translation of some chloroplast proteins . </P>

What process of photosynthesis occurs in the stroma of the chloroplast