- Photosynthesizing organelles of all of the photosynthetic eukaryotes

- The most successful thing so far humans have produced is is the chloroplasts solar power system

- It is enclosed by the inner membrane and the outer membrane which are separated by a thin intermembrane space

- The inner membrane has a compartment that holds thick fluid called stroma and it contains enzymes, ribosomes, and the chloroplasts DNA

- In the inside of chloroplasts there are a network of interconnected sacs, thylakoids

- Thylakoids contain compartments in this sac and it is called thylakoid space

- These thylakoids ocassionally stack together like Pringles and each of the stacks are called granum