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 (D)</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 (C)</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 (C)</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 (C)</p> Signup and view all the answers

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

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

What did Friedrich Miescher isolate from the nucleus in 1870?

<p>Proteins and nucleic acids (C)</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 (A)</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 (C)</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 (A)</p> Signup and view all the answers

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