Do prokaryotic cells have membrane-bound organelles?

Do prokaryotic cells have membrane-bound organelles?

• A. Only in some species
• B. No
• C. Yes
• D. All of them have

Answer: (B)

Prokaryotic cells do not have membrane-bound organelles. A membrane-bound organelle is a distinct compartment inside a cell, surrounded by its own membrane—think nuclei, mitochondria, chloroplasts, and other specialized structures found in more complex cells. In prokaryotes, there is no true nucleus; DNA sits in the cytoplasm in a region called the nucleoid. Functions like energy production and synthesis occur mainly at the cell membrane or in the cytoplasm, not in separate enclosed compartments. Some bacteria have internal membrane infoldings that assist certain processes, but these do not form separate, fully enclosed organelles like mitochondria or chloroplasts. So, prokaryotic cells lack membrane-bound organelles.

Prokaryotic cells do not have membrane-bound organelles. A membrane-bound organelle is a distinct compartment inside a cell, surrounded by its own membrane—think nuclei, mitochondria, chloroplasts, and other specialized structures found in more complex cells. In prokaryotes, there is no true nucleus; DNA sits in the cytoplasm in a region called the nucleoid. Functions like energy production and synthesis occur mainly at the cell membrane or in the cytoplasm, not in separate enclosed compartments. Some bacteria have internal membrane infoldings that assist certain processes, but these do not form separate, fully enclosed organelles like mitochondria or chloroplasts. So, prokaryotic cells lack membrane-bound organelles.