Question: do prokaryotes and eukaryotes have rough er?
Answer: While a structure such as a nucleus is only found in eukaryotes, every cell needs ribosomes to manufacture proteins. Since there are no membrane-bound organelles in prokaryotes, the ribosomes float free in the cytosol. ... Endoplasmic reticulum with attached ribosomes is called rough ER. It looks bumpy under a microscope.