Biology 9700 · AS & A Level · The microscope in cell studies

The microscope in cell studies — practice question

The photomicrograph has a magnification of $\times 4000$. What is the real size of the nucleolus?

  • A$1\,\mu\text{m}$
  • B$2\,\mu\text{m}$
  • C$5\,\mu\text{m}$
  • D$20\,\mu\text{m}$

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