Answer: B. organelles have no membranes
Step-by-step explanation:
Unlike eukaryotic cells, prokaryotic cells lack organelles with membranes.
So, prokaryotic cells are found in unicellular organisms with a single chromosome that have no nuclear envelope and no membrane-bound organelles i.e organelles like mitochondria, golgi bodies etc all lack membrane.
Examples of prokaryotic cells are bacteria and cyanobacteria