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The Chemistry of DNA
35
Transcript
Attaching a Phosphate Group
Attaching a Base
Joining the Nucleotides into a DNA Strand
The Basic Structure of DNA
A DNA strand is simply a string of these nucleotides joined together
...and you can continue to add more
nucleotides in the same way to make the
DNA chain
Joining the two Strands Together
Adenine always bind with thymine and guanine always
binds with cytosine
These particular pairs fit exactly to form very effective hydrogen bonds
Deoxyribose is a ribose sugar which has lost an
oxygen atom
The Final Structure of DNA
Deoxyribose sugar is a modified version of another sugar called ribose
The Sugars in the Backbone
Repeating units of a sugar group
and a phosphate group
DNA = Deoxyribonucleic acid
Numbering the Carbon atoms on Deoxyribose Sugar
Bibliography:
http://www.chemguide.co.uk/organicprops/aminoacids/dna1.html
THANK YOU!
Pictures:
http://www.chemguide.co.uk/organicprops/aminoacids/dna1.html
http://www.userinter.net/wp-content/uploads/2011/04/3D-DNA-Strain.jpg
http://upload.wikimedia.org/wikipedia/commons/f/fe/DNA_simple2.svg
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