Here's why:
* Chloroplasts are the organelles within plant cells (and some algae) that contain chlorophyll. Chlorophyll is the pigment that absorbs light energy, which is essential for photosynthesis.
* Photosynthesis occurs in two stages:
* Light-dependent reactions: These reactions take place within the thylakoid membranes of the chloroplast. They capture light energy and convert it into chemical energy in the form of ATP and NADPH.
* Light-independent reactions (Calvin Cycle): These reactions occur in the stroma of the chloroplast. They use the energy from ATP and NADPH to convert carbon dioxide into glucose.
So, while the entire plant cell is involved in photosynthesis, it is the chloroplast within the cell that is the site of glucose production.
