Slimes perfectly said to me.
1) they allow for multiple reactions in the cell at once for example the mitochondria producing ATP for respiration and The Rough endoplasmic reticulum and ribosomes for protein synthesis
Chemical composition and physical properties
Eukaryotic organisms (animals, plants, fungi, and protists) store most of their DNA inside the cell nucleus and some of their DNA in organelles, such as mitochondria or chloroplasts. In contrast, prokaryotes (bacteria and archaea) store their DNA only in the cytoplasm.