Organelles are the cell's "organs".
They are found in Eukaryotic cells. Nuclei have two membrances and communicates with the cytosol with their numerous nuclear pores. DNA is found in the nucleus, in the chromosomes. RNA is also here.
Nucleolus: Inside the nucleus, the nucleolus produces ribosome.
Cytosol: Liquid matter found in cells where the organelles float in it. A lot of cell digestion. Cytosol is full of proteins that control metabolism.