Discussion
Consider the following statements about prokaryotes and eukaryotes.
1. Prokaryotic cells are generally smaller than eukaryotic cells.
2. Both possess ribosomes, though of different sizes.
3. Only eukaryotes possess a cell wall.
Answer: B
The first two are correct. The third is wrong in both directions: most bacteria have a wall of peptidoglycan, while animal cells, which are eukaryotic, have no wall at all. Walls are therefore no guide to which group a cell belongs to.
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