Frederick Griffith's 1928 Experiment on Genetic Material
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Questions and Answers

What did Frederick Griffith's 1928 experiment identify?

  • The structure of DNA
  • The role of proteins in genetic material
  • The function of RNA
  • The transforming principle (correct)

    • What happened in the fourth experiment of Griffith's study?

  • The smooth virulent cells were killed by injection into mice
  • The harmless R cells had been transformed by material from the dead S cells (correct)
  • The heat-killed nonvirulent smooth cells became virulent
  • The rough nonvirulent cells transformed into smooth virulent cells

    • Which substances were essential for the transformation observed in Griffith's experiment?

  • Only RNA
  • Only DNA
  • Protein, RNA, and DNA (correct)
  • Only protein

    • Who led the team that showed DNA as the unit of inheritance?

    <p>Oswald Avery</p> Signup and view all the answers

    What did Oswald Avery's work inspire Watson and Crick to do?

    <p>Seek the structure of DNA</p> Signup and view all the answers

    What did Oswald Avery discover about the transforming material in bacteria?

    <p>Cell extracts treated with DNA-digesting enzymes lost their transforming ability</p> Signup and view all the answers

    What was the significance of Oswald Avery's discovery according to a Nobel laureate?

    <p>The historical platform of modern DNA research</p> Signup and view all the answers

    What was the conclusion drawn by Oswald Avery from his experiments?

    <p>DNA, not protein, transforms bacteria</p> Signup and view all the answers

    What did Friedrich Miescher isolate from the nucleus in 1870?

    <p>Proteins and nucleic acids</p> Signup and view all the answers

    What was the prevailing belief regarding the chemicals involved in inheritance when Miescher was studying nucleic acids?

    <p>Proteins were more likely to be the chemicals involved in inheritance</p> Signup and view all the answers

    What did Frederick Griffith discover about the bacteria Diplococcus pneumoniae?

    <p>S bacteria causes pneumonia while R bacteria does not</p> Signup and view all the answers

    What was the great mystery that scientists were trying to solve regarding genes and genetic material?

    <p>Where and how genetic information is stored</p> Signup and view all the answers

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