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Science Buddies: What Duration of Ultraviolet Exposure Kills Bacteria?

Curated by ACT

Ultraviolet light can damage DNA molecules. If a cell's DNA repair mechanisms can't keep up with the damage, mutations are the result. As harmful mutations accumulate, the cell eventually dies. How much ultraviolet light is too much for a bacterial cell?

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Classroom Considerations
  • Knovation Readability Score: 3 (1 low difficulty, 5 high difficulty)