Discovery Of DNA Warm Up 1

10 Questions | Total Attempts: 145

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Discovery Of DNA Warm Up 1

Welcome to the electronic biology classroom of the 21st century. This biology warm-up or bell ringer deals with basic introduction to the discovery of the DNA molecule and those scientists who contributed their research skills to the field of biochemistry. This warm up exercise allow an unlimited number of attempts to increase your learning and TEST-TAKING skills. It will generate a new set of questions for every attempt you make. I wish you high marks and good grades in the your biological science course!


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Questions and Answers
  • 1. 
    Which two American researchers set out to test whether DNA or protein was the hereditary material viruses transfer when entering a bacterium?
    • A. 

      Griffth and Chase

    • B. 

      Chase and Oswald

    • C. 

      Watson and Crick

    • D. 

      Crick and Hershey

    • E. 

      Chase and Hershey

  • 2. 
    Which strain is  harmful of Streptoccus pneumoniae to humans?
    • A. 

      S. strain

    • B. 

      E. strain

    • C. 

      R. strain

    • D. 

      F. strain

    • E. 

      E and F strain

  • 3. 
    Which statement is correct concerning the experiment of Hershey and Chase?
    • A. 

      DNA is the heredity material

    • B. 

      Protein is the heredity material

    • C. 

      RNA is the heredity material

    • D. 

      Transfer RNA is the heredity material

    • E. 

      Ribosomal RNA is the heredity material

  • 4. 
    Which radioactive isotope is used to label proteins?
    • A. 

      Sulfur - 30

    • B. 

      Sulfur - 32

    • C. 

      Sulfur - 35

    • D. 

      Selenium - 35

  • 5. 
    Which radioactive isotope is used to label DNA?
    • A. 

      Phosphorus - 30

    • B. 

      Sulfur - 32

    • C. 

      Phosphorus - 32

    • D. 

      Selenium - 35

    • E. 

      Phosphorus - 38

  • 6. 
    Which is NOT a strain of Streptoccus pneumoniae?
    • A. 

      S. strain

    • B. 

      E. strain

    • C. 

      R. strain

    • D. 

      F. strain

    • E. 

      E and F strain

  • 7. 
    What bacteria was the target of the Hershey-Chase Experiment using bacteriophages?
    • A. 

      Bacillus anthraxis

    • B. 

      Streptococcus pyogenes

    • C. 

      Escherischia perfringes

    • D. 

      Escherischia coli

    • E. 

      Clostridium tetani

  • 8. 
    Frederick Griffith performed four experiments using Streptococcus pneumoniae on mice. Which experiment killed the mice?
    • A. 

      Injected mouse with live R cells

    • B. 

      Inject mouse with live S cells

    • C. 

      Kill S cell with heat

    • D. 

      Kill S cells with heat and mixed with live S cells

    • E. 

      Kill S cells with heat and mixed with live F cells

  • 9. 
    Frederick Griffith concluded after his experiments on laboratory mice.  This factor killed the Streptococcus pneumoniae.
    • A. 

      Strong and healthy mice

    • B. 

      Heat

    • C. 

      Room temperature

    • D. 

      Poor health mice

  • 10. 
    Bacteriophages contain DNA labeled with radioactive sulfur-35.
    • A. 

      True

    • B. 

      False