Chloroplasts

In the plant cell model that Mario presented, a horse chestnut took the place of the nucleus, a handful of plasticine was the cytoplasm, the organelles were represented by lentils and other beans, small bits of green pipe cleaner served as chloroplasts, and the plastic bottle that held everything was the cell membrane, surrounded by a thick papier-mâché coat for the cell wall.

Prokaryotes do not have organelles such as mitochondria or chloroplasts; eukaryotes have a variety of organelles, some of which are separated from the cytoplasm by membranes.