Both structures are circular and ovoid shape, have an intermembrane and are involved with ATP production using the proton gradient. They both have ATP synthases and electron transport chains. They differ in size and and function, mitochondria generate ATP from flucose while choloroplasts generate it from light. Structure-wise, chloroplasts contain starch grains in the stroma while none are in mitochondria. Chloroplasts are only found in plant cells and mitchondria are found in animals, plants and unicellular organisms. Both contain glucose that function in each organelle and produce ATP. However mitochondria uses the glycolysis and chlorplast use photosynthesis.
