Mutagenicity and Types of Mutagens
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Questions and Answers

What would be the conclusion if a chemical causes lower growth compared to the control group?

  • The chemical needs to be metabolized first
  • The chemical has no effect on growth
  • The chemical is not a mutagen (correct)
  • The chemical is a mutagen
  • What is the term for a non-direct acting mutagen that needs to be metabolized first?

  • Mutagen
  • Chemical agent
  • Histidine
  • Pro-mutagen (correct)
  • What would be the conclusion if histidine grows after mixing with a chemical?

  • The chemical has no effect on histidine
  • The chemical needs to be metabolized first
  • The chemical is a mutagen (correct)
  • The chemical is not a mutagen
  • What is the effect of a mutagen on the growth of mutated histidine?

    <p>It increases the growth</p> Signup and view all the answers

    What is the role of metabolic activation in a pro-mutagen?

    <p>It converts the pro-mutagen into a mutagen</p> Signup and view all the answers

    What is the result if a chemical causes an increase in the growth of mutated histidine?

    <p>The chemical is a mutagen</p> Signup and view all the answers

    What is the definition of a mutagen?

    <p>A substance that increases the growth of mutated histidine</p> Signup and view all the answers

    What is the role of a mutagen in the growth of histidine?

    <p>It increases the growth of mutated histidine</p> Signup and view all the answers

    Study Notes

    Mutagenicity

    • A mutagen is a chemical that causes an increase in growth due to mutations.
    • If a chemical causes lower growth compared to the control group, it is not a mutagen.
    • Mutagens increase growth by causing mutations in histidine, which then grow.

    Direct and Indirect Acting Mutagens

    • A mutagen can be direct or indirect acting.
    • Pro-mutagen is a non-direct acting mutagen that needs to be metabolized first before it can convert histidine to its mutated form (his+).

    Note on Research

    • Rozaini conducted research on mutagenicity from 2009 to 2012.

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    Description

    This quiz covers the definition of mutagens, their effect on growth, and the difference between direct and indirect acting mutagens. Learn how mutagens cause mutations in histidine and how pro-mutagens work.

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