Biology 9700 · AS & A Level · Cells as the basic units of living organisms

Cells as the basic units of living organisms — practice question

Which option gives a correct comparison between a typical prokaryotic cell and a typical eukaryotic cell?

  • Aprokaryote: circular DNA only; eukaryote: linear DNA only
  • Bprokaryote: naked DNA; eukaryote: DNA associated with protein
  • Cprokaryote: rough endoplasmic reticulum present; eukaryote: smooth endoplasmic reticulum and rough endoplasmic reticulum present
  • Dprokaryote: ribosomes approximately $22\,\text{nm}$ diameter; eukaryote: ribosomes approximately $18\,\text{nm}$ in diameter

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