Here's a more detailed explanation:

* Chloroplasts are organelles found within the cytoplasm of plant cells (and some algae). They are responsible for capturing light energy and converting it into chemical energy in the form of sugars.

* Inside the chloroplasts, the process of photosynthesis occurs in specific structures called thylakoids. Thylakoids are stacked together like coins to form structures called grana. The space between the thylakoid membranes is called the stroma.

* Light-dependent reactions occur in the thylakoid membranes, while light-independent reactions (also known as the Calvin cycle) occur in the stroma.

Let me know if you'd like to learn more about the specific steps involved in photosynthesis!