Chloroplasts are the only part of a cell that do photosynthesis - chloroplasts is only in plant cells.
Explanation:
Chloroplasts are organelles present only in plant cells and algae, in the regions that are illuminated. They are green in color due to the presence of chlorophyll and are responsible for photosynthesis. They can have different shapes and sizes, besides, in the cell there can be only one or a large amount of them, this varies according to the type of plant.
Photosynthesis takes place in chloroplasts, the process responsible for the production of energy and organic substances. In addition, chloroplasts are capable of synthesizing amino acids and lipids, which form their membrane.
Green plants use their chlorophyll to capture the energy of sunlight and split water molecules. As they do, they release oxygen into the air. Green plants use energy from the sunlight and carbon dioxide from the air to make sugar. In effect, they create “mass” from “gas.”
It's main function is to produce ATP, the energy currency of the cell. The mitochondria take fuel (glucose) and essentially burns it. The energy given off by oxidizing the fuel is harnessed by causing ions to move across a membrane, kind of like pumping water. The ions then flow down through a protein which synthesizes ATP much like the water then flows down through a dam to generate electricity.
