Mutagens and Mutations Reading
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Questions and Answers

What is the effect of transposons on genes?

  • No effect on gene activity
  • Increase gene activity (correct)
  • Decrease gene activity
  • Destroy the gene
  • How do viruses act as biological mutagens?

  • Alter genetic material as cells divide (correct)
  • Cause cell division
  • Destroy genetic material
  • Increase genetic material
  • Which physical mutagen can lead to skin cancer?

  • Atomic particles
  • Subatomic particles
  • UV radiation (correct)
  • X-rays
  • How do thymine dimers affect DNA?

    <p>Change DNA structure and prevent proper transcription</p> Signup and view all the answers

    Which industry frequently uses chemicals that act as mutagens?

    <p>Food and beauty industries</p> Signup and view all the answers

    What is a common source of chemical mutagens that can cause DNA damage?

    <p>Processed meats with preservatives</p> Signup and view all the answers

    What are some examples of physical or chemical agents that can cause mutations?

    <p>Exposure to radiation and chemicals in cigarette smoke</p> Signup and view all the answers

    Which type of mutation affects a single nucleotide?

    <p>Substitutions</p> Signup and view all the answers

    What causes large-scale mutations that change entire regions of a chromosome?

    <p>Improper DNA replication</p> Signup and view all the answers

    In the context of mutations, what are transposons?

    <p>Biological mutagens causing mutations in cells</p> Signup and view all the answers

    When an external agent causes a mutation, what is it typically called?

    <p>A mutagen</p> Signup and view all the answers

    Which category do mutagens like radiation and certain chemicals fall into?

    <p>Physical</p> Signup and view all the answers

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