Vaccination Process and History
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Questions and Answers

Which scientist(s) provided evidence that DNA was the genetic material?

  • Avery, MacLeod, and McCarty (correct)
  • Griffith
  • Luria and Delbruck
  • Beadle and Tatum

    • What was the key hypothesis proposed by Beadle and Tatum regarding genes and enzymes?

  • DNA as the genetic material
  • Rapid growth of microorganisms in the lab
  • One gene, one polypeptide (correct)
  • Spontaneous gene mutations in bacteria

    • What was the key discovery made by Luria and Delbruck regarding gene mutations in bacteria?

  • DNA as the genetic material
  • One gene, one polypeptide
  • Rapid growth of microorganisms in the lab
  • Spontaneous gene mutations (not directed by environment) (correct)

    • What is a key advantage of using microorganisms as research tools?

    <p>Microorganisms can grow rapidly and in large amounts in the lab at reasonable cost</p> Signup and view all the answers

    What is the key difference between prokaryotic and eukaryotic cells?

    <p>Prokaryotes have a relatively simple morphology and lack a true membrane-bound nucleus, while eukaryotes are morphologically complex and have a true, membrane-bound nucleus.</p> Signup and view all the answers

    What did Pasteur and Roux discover about attenuated bacteria?

    <p>Incubating cultures longer than normal resulted in attenuated bacteria that could no longer cause disease.</p> Signup and view all the answers

    What process did Pasteur develop to preserve wine during storage?

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

    What did Martinus Beijerinck and Sergei Winogradsky pioneer the use of?

    <p>Enrichment cultures and selective media</p> Signup and view all the answers

    What did Sergei Winogradsky discover about soil bacteria?

    <p>They could oxidize iron, sulfur, and ammonia to obtain energy.</p> Signup and view all the answers

    What did the work of Emil von Behring and Shibasaburo Kitasato involve?

    <p>Raising antibodies to inactivated diphtheria toxin for passive immunization.</p> Signup and view all the answers

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