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Dna

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Dna

  1. 1. DNA By Chris Asimos
  2. 2. Who is DNA? <ul><li>DNA is a nickname which stands for deoxyribonucleic acid. </li></ul><ul><li>It is located in every cell’s nucleus. </li></ul><ul><li>Four chemical bases that help form DNA: </li></ul><ul><ul><li>Adenine (A) </li></ul></ul><ul><ul><li>Guanine (G) </li></ul></ul><ul><ul><li>Cytosine (C) </li></ul></ul><ul><ul><li>Thymine (T) </li></ul></ul>
  3. 3. The DNA Family Reunion <ul><li>Adenine, guanine, cytosine, and thymine pair up into groups (2) </li></ul><ul><ul><li>A  T; G  C </li></ul></ul><ul><li>Each pairs connects with a sugar and phosphate molecule called a nucleotide. </li></ul><ul><ul><li>Double Helix </li></ul></ul><ul><li>DNA can make copies of itself. </li></ul><ul><li>Helps cells divide because they need the exact old copy. </li></ul>
  4. 4. Information <ul><li>James Watson discovered DNA ’53 </li></ul><ul><li>DNA can replicate itself and direct protein synthesis. </li></ul><ul><li>A.K.A nucleic acids </li></ul>
  5. 5. DNA has friends!! <ul><li>Gene – distinct part of the DNA (25,000) </li></ul><ul><li>Proteins – DNA plays a key role in protein synthesis and allows proteins to combine with one another. </li></ul><ul><li>Chromosomes – genes are packaged in chromosomes and determine body characteristics. (23 pairs) </li></ul><ul><li>RNA (BFF) </li></ul>
  6. 6. DNA’s BFF <ul><li>RNA wants to be just like DNA but can’t. </li></ul><ul><li>Three differences: </li></ul><ul><ul><li>RNA has one strand </li></ul></ul><ul><ul><li>Replaces Thymine with Uracil. </li></ul></ul><ul><ul><li>RNA does not have a hydroxyl group. </li></ul></ul><ul><li>Not very long strands, packed tightly. </li></ul>
  7. 7. DNA’s Daily Life <ul><li>Without DNA, you’d be dead. </li></ul><ul><li>It’s in every cell of the body and controls the function and structure of the body. </li></ul><ul><li>Controls protein production. </li></ul>
  8. 8. The Life of DNA <ul><li>Survives for millions of years. </li></ul><ul><li>Your DNA is the same DNA as someone else’s a couple million years ago. </li></ul><ul><li>Can live up to 250 million years. </li></ul><ul><li>DNA always exists! </li></ul>

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