They are all made of cells Nucleus Cell wall Mitochondria The Cell A B B because it is rectangular in shape, has a cell wall and chloroplasts. Mitochondria Cell Wall Chloroplasts Cell membrane Mitochondria, Cell membrane, Nucleus, Vacuole, cytoplasm, ER, Ribosomes Cell tissue organ Organ system Organism Chloroplasts Tissues The cell The nucleus Organ Systems You only need to know the organelles with a star next to them on your notes. These include: › Nucleus › Cell Membrane › Cytoplasm › Mitochondria › Vacuole › Chloroplasts › Cell Wall Plant Cells Only