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Which feature is unique to prokaryotic cells compared with eukaryotic?
AA well-defined nucleus with chromatin and nucleolus
BA primitive nucleus without a nuclear membrane
CLarge ribosomes attached to rough ER membranes
DMembrane-bound mitochondria producing ATP
Answer & Solution
Correct answer: B. A primitive nucleus without a nuclear membrane
1. The chapter section 2.10 defines prokaryotic and eukaryotic cells.
2. Prokaryotes such as bacteria lack a nuclear membrane.
3. Their chromatin lies free in the cytoplasm.
4. Eukaryotes have a true nucleus bounded by an envelope.
_Source: Selina Concise Biology Class 9, Ch 2 Cell, the Unit of Life (Mistral OCR'd PDF), section 2.10_
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