Which organelle is common between a eukaryotic and a prokaryotic cell?

Correct option is D

The correct answer is (d) Ribosomes
· Ribosomes are the only organelles common to both prokaryotic and eukaryotic cells.
· They are responsible for protein synthesis.
· Ribosomes in prokaryotes are 70S, while in eukaryotes they are 80S.
· They are non-membrane bound organelles.
· Found freely in cytoplasm or attached to endoplasmic reticulum in eukaryotes.
· Vital for cell growth and metabolism.
Information Booster:
• Made of rRNA and proteins.
• Prokaryotic ribosomes float freely; no compartmentalization.
• Eukaryotic ribosomes can be free or bound.
• Ribosomes translate mRNA into polypeptides.
• Discovered by George Palade, who won a Nobel Prize.
• Present in organelles like mitochondria and chloroplasts as well.
Additional Information:
• Cell organelle – Generic term, not specific.
• Nucleus – Only present in eukaryotes.
• Cell membrane – Common, but not an organelle; it is a structure.