<Table> Major eukaryotic organelles <Tr> <Th> Organelle </Th> <Th> Main function </Th> <Th> Structure </Th> <Th> Organisms </Th> <Th> Notes </Th> </Tr> <Tr> <Td> chloroplast ( plastid ) </Td> <Td> photosynthesis , traps energy from sunlight </Td> <Td> double - membrane compartment </Td> <Td> plants , protists ( rare kleptoplastic organisms ) </Td> <Td> has own DNA ; theorized to be engulfed by the ancestral eukaryotic cell ( endosymbiosis ) </Td> </Tr> <Tr> <Td> endoplasmic reticulum </Td> <Td> translation and folding of new proteins ( rough endoplasmic reticulum ) , expression of lipids ( smooth endoplasmic reticulum ) </Td> <Td> single - membrane compartment </Td> <Td> all eukaryotes </Td> <Td> rough endoplasmic reticulum is covered with ribosomes , has folds that are flat sacs ; smooth endoplasmic reticulum has folds that are tubular </Td> </Tr> <Tr> <Td> flagellum </Td> <Td> locomotion , sensory </Td> <Td> </Td> <Td> some eukaryotes </Td> <Td> </Td> </Tr> <Tr> <Td> Golgi apparatus </Td> <Td> sorting , packaging , processing and modification of proteins </Td> <Td> single - membrane compartment </Td> <Td> all eukaryotes </Td> <Td> cis - face ( convex ) nearest to rough endoplasmic reticulum ; trans - face ( concave ) farthest from rough endoplasmic reticulum </Td> </Tr> <Tr> <Td> mitochondrion </Td> <Td> energy production from the oxidation of glucose substances and the release of adenosine triphosphate </Td> <Td> double - membrane compartment </Td> <Td> most eukaryotes </Td> <Td> constituting element of the chondriome ; has own DNA ; theorized to be engulfed by an ancestral eukaryotic cell ( endosymbiosis ) </Td> </Tr> <Tr> <Td> nucleus </Td> <Td> DNA maintenance , controls all activities of the cell , RNA transcription </Td> <Td> double - membrane compartment </Td> <Td> all eukaryotes </Td> <Td> contains bulk of genome </Td> </Tr> <Tr> <Td> vacuole </Td> <Td> storage , transportation , helps maintain homeostasis </Td> <Td> single - membrane compartment </Td> <Td> eukaryotes </Td> <Td> </Td> </Tr> </Table>
which organelle is the site of atp production and storage
mitochondrion