Which of the following structures is not found in a prokaryotic cell? (a) Mesosome (b) Plasma membrane (c) Nuclear envelope (d) Ribosome
Option C is correct A prokaryotic cell is characterised by absence of an organised nucleus and membrane bound cell organelles. DNA is naked i.e., without a nuclear envelope and lies variously coiled in the cytoplasm. It is commonly called nucleoid or genophore. Mesosomes, plasma membrane and 70S ribosomes are present in a prokaryotic cell.
