043 - Cellular Organelles Paul Andersen describes the structure and function of the major organelles in a eukaryotic cell. The endoplasmic reticulum, ribosomes, and golgi complex produce and store proteins in the cell. Lysosomes dissolve broken and invasive material. Vacuole store material in plant cells. Mitochondria produce ATP through cellular respiration and chloroplasts use the energy of the sun to produce sugars.