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Unit 3 test

QuestionAnswer
Chargaffs rule proposed by Erwin Chargaff Adenine and thymine concentrations are almost equal and guanine and cytosine also almost have equal concentrations in any sample of DNA
Rosalind Franklin - took photo 51 with X-ray diffraction, discovered that DNA is a helix shape in 1952 - died of cancer in 1958
Researched at Kings College Franklin and Willkins
Watson and Crick -Used photo 51 to build a 3-D model of DNA in 1953 -discovered DNA was a double helix and the sides alternated between phosphates and sugars
Cambridge University Watson and Crick
Nobel prize of 1962 rewarded to Watson, Crick, and Willkins for structure of DNA -cannot be awarded to passed people (Franklin)
Morace Willkins -his idea to use X ray diffraction to photograph DNA Researched alongside Franklin
1958 Franklin passed from cancer
1962 Nobel prize was awarded to Crick, Watson, Willkins for structure of DNA
1952 Franklin takes photo 51 discovering DNA is a helix shape
1953 Crick and Watson build 3-D model of DNA using photo 51 and discover that its a double helix with the sides alternating between phosphates and sugars
Nucleic acids -organic compound -made by living organisms -macro-molecules -EX: DNA, RNA
Creation of Nucleic acids Monomers called Nucleotide combine to create Polymers called Nucleic Acids.
Nucleotide need Phosphates, sugars,bases
DNA Deoxyribose nucleic acids
double helix twisted ladder or spiral staircase
2 side strands -1 goes up 1 goes down - alternate between sugars and phosphates
DNA definition genetic information and coding
structure of DNA sides alternate between sugars and phosphates, nitrogen bases come off of the sugar molecules, and hydrogen bonds hold the bases together keeping the 2 strands of DNA together (discovered by Franklin)
2 groups of bases Purines & pyrimidines
pyrimidines thymine & cytosine
purines adenine & guanine
Created by: am56825
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