Biology 9700 · AS & A Level · Replication and division of nuclei and cells

Replication and division of nuclei and cells — practice question

Methotrexate is a drug that is used in cancer treatment. It works as an enzyme inhibitor, stopping the production of nucleotides that contain thymine. Cells exposed to methotrexate are unable to finish the cell cycle. A cell that has entered telophase is exposed to methotrexate. Which stage of the cell cycle will be affected by methotrexate’s action?

  • Aanaphase
  • Binterphase
  • Cmetaphase
  • Dprophase

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