biology

Card Set Information

Author:
xodorkydancerox
ID:
9513
Filename:
biology
Updated:
2010-03-07 19:01:20
Tags:
section 1
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Description:
discovery of dna
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  1. virulent
    disease causing strain of a bacteria
  2. griffith
    was trying to discover cure for pneumonia, used the smooth and rough colonies/heat killed bacteria and discovered that transformation(transfer of genetic material from one cell to another or from one organism to another) happens
  3. avery
    wanted to find transforming agent, created extract and killed rna, dna, protein and discovered that transformation didn't occur when dna was not present; therefore dna is the transforming agent
  4. hershey-chase
    tested whether viruses transfer dna or protein, marked protein with radioactive sulfur(35S) and dna with radioactive phosphorus (32P), allowed the virus to infect bacteria then separated with centrifuge, concluded: dna is the hereditary molecule in viruses
  5. bacteriophage
    virus that infects bacteria

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