Nucleic Acids : DNA –  D eoxyribo N ucleic  A cid RNA –  R ibo N ucleic  A cid
Nucleic Acids <ul><li>Nucleotides  are the  monomers  that make up the nucleic acid  polymer : </li></ul><ul><li>Sugar –  ...
 
The structure of DNA was discovered in 1953… <ul><li>… by James Watson and Francis Crick.  They proposed… </li></ul><ul><l...
 
Watson/Crick model of DNA
 
R ibo N ucleic  A cid - RNA
<ul><li>Differences between DNA and RNA : </li></ul><ul><li>DNA – Deoxyribose; RNA – Ribose </li></ul><ul><li>DNA – Thymin...
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Nucleic Acids

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Nucleic Acids

  1. 1. Nucleic Acids : DNA – D eoxyribo N ucleic A cid RNA – R ibo N ucleic A cid
  2. 2. Nucleic Acids <ul><li>Nucleotides are the monomers that make up the nucleic acid polymer : </li></ul><ul><li>Sugar – Deoxyribose or Ribose </li></ul><ul><li>A phosphate group </li></ul><ul><li>A nitrogenous base: (1 of 5) </li></ul><ul><li>Purines – double ringed – A and G </li></ul><ul><li>Pyrimidines – single ringed – T , C, and U </li></ul>
  3. 4. The structure of DNA was discovered in 1953… <ul><li>… by James Watson and Francis Crick. They proposed… </li></ul><ul><li>DNA is a molecule of two nucleotide chains oriented in opposite directions. </li></ul><ul><li>The bases connect in the middle like rungs of a ladder. </li></ul><ul><li>Complementary base pairing: A – T; C – G </li></ul><ul><li>The two strands are twisted together forming a double helix. </li></ul>
  4. 6. Watson/Crick model of DNA
  5. 8. R ibo N ucleic A cid - RNA
  6. 9. <ul><li>Differences between DNA and RNA : </li></ul><ul><li>DNA – Deoxyribose; RNA – Ribose </li></ul><ul><li>DNA – Thymine; RNA – Uracil (A, G, and C) </li></ul><ul><li>DNA – double strand; RNA – single strand </li></ul>

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