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Match the Scientist(s) with Their Corresponding Revolutionary Discovery or Experiment

Question 62

Matching

Match the scientist(s) with their corresponding revolutionary discovery or experiment.

Premises:

Responses:

grew bacteria in the presence of heavy nitrogen (15N), followed by growth 14N medium for one or two generations, then measured the density of the DNA

Chargaff

discovered that DNA was responsible for bacterial transformation

Griffith

demonstrated that DNA is replicated semiconservatively

Hershey and Chase

demonstrated the ratio of nucleotide bases in DNA

Avery

discovered that the genetic material in bacteriophages is DNA

Messelson and Stahl

used proteins labeled with 35S and DNA labeled with 32P to demonstrate that viral DNA entered bacterial cells, but viral proteins did not

demonstrated that genetic traits can be transferred from one bacterium to another

Premises:

grew bacteria in the presence of heavy nitrogen (15N), followed by growth 14N medium for one or two generations, then measured the density of the DNA

discovered that DNA was responsible for bacterial transformation

demonstrated that DNA is replicated semiconservatively

demonstrated the ratio of nucleotide bases in DNA

discovered that the genetic material in bacteriophages is DNA

used proteins labeled with 35S and DNA labeled with 32P to demonstrate that viral DNA entered bacterial cells, but viral proteins did not

demonstrated that genetic traits can be transferred from one bacterium to another

Responses:

Chargaff

Griffith

Hershey and Chase

Avery

Messelson and Stahl

Correct Answer:

Premises:

Responses:

grew bacteria in the presence of heavy nitrogen (15N), followed by growth 14N medium for one or two generations, then measured the density of the DNA

discovered that DNA was responsible for bacterial transformation

demonstrated that DNA is replicated semiconservatively

demonstrated the ratio of nucleotide bases in DNA

discovered that the genetic material in bacteriophages is DNA

used proteins labeled with 35S and DNA labeled with 32P to demonstrate that viral DNA entered bacterial cells, but viral proteins did not

demonstrated that genetic traits can be transferred from one bacterium to another

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