The cell is exposed to light.name one substance whose concentration would increase inside the chloroplast and explain why this would happen

One substance whose concentration would increase inside the chloroplast when exposed to light is adenosine triphosphate (ATP).

When light hits the chloroplast, it initiates the process of photosynthesis, which involves converting light energy into chemical energy in the form of ATP. This ATP is crucial for providing energy for various biochemical processes within the chloroplast, such as the Calvin cycle, which produces glucose. Therefore, when the cell is exposed to light, the concentration of ATP within the chloroplast would increase to support the increased energy demands of photosynthesis.