A prokaryotic cell contains all of the following EXCEPT
Correct answer: B. a nuclear envelope
- A. cytoplasm
- B. a nuclear envelope
- C. ribosomes
- D. a plasma membrane
Explanation
The defining absence in a prokaryote is a membrane-bound nucleus; its DNA lies free in the nucleoid. It still has cytoplasm, 70S ribosomes and a plasma membrane, since those are requirements of every living cell.
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About Animal and Plant Cell
Animal and plant cells share a plasma membrane, cytoplasm, nucleus, ribosomes, mitochondria and endoplasmic reticulum, but plant cells also have a cellulose cell wall, chloroplasts and a large permanent vacuole. Questions cover organelle structure and function, differences between the two cell types, and how membranes control movement of substances.
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