They are one of the energy carriers of cellular respiration
Chloroplasts in the thylacoids, cell walls and large central vacuoles.
thylacoids contain photosynthetic pigments chlorophylla and β-carote. There are othe pigments (red- phycoenthrin, blue- phycocyan)
The intense heat and light generated by nuclear fusion in the sun's core is stored there until it slowly works it's way to the sun's surface and travels outward into space. Astronomers believe that the heat of a ton of hydrogen fused into helium in the sun's core today will not reach the outer surface of the sun for 200,000 years yet.
Chloroplast
Resembling to mitochondria, chloroplasts carry out their energy interconversions by chemiosmotic mechanisms in much the same way as the mitochondria do. The inner membrane surrounds a large space called stroma (analogous to the mitochondrial matrix) and contains various enzymes, ribosomes, RNA, and DNA. This inner membrane is not folded into cristae (as it is in mitochondria) and does not contain an electron-transport chain, instead, the electron-transport chain as well as the photosynthetic light-absorbing system and an ATP synthase are all contained in a third distinct membrane that forms a set of flattened disclike sacs, the thylacoids. The lumen of each thylacoid is though to be connected with the lumen of other thylacoid, thereby defining a third internal compartment called the thylacoid space, which is separated from the stroma by the thylacoid membrane.All this energy engineering of the plants, allows that the knobbed end of the chloroplast ATP synthase, where ATP is synthesized, protrude from the thylacoid membrane into the stroma, just as it protrudes into the matrix from the membrane of each mitochondrial crista.