Dna Guided Reading Pd1

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Dna Guided Reading Pd1

  1. 1. DQ 2/9/10 <ul><li>Who was the first scientist to observe what are now called bacteria (p 29)? </li></ul><ul><li>What is the most abundant chemical found in living cells (p19)? </li></ul><ul><li>What are the three parts of the cell theory (p 30)? </li></ul>
  2. 2. DNA guided reading p 78-79 <ul><li>A cell makes a copy of ____ before mitosis occurs </li></ul><ul><li>DNA replication ensures that each ___________ __________ will have all of the genetic information it needs to carry out its activities </li></ul><ul><li>By the early _________ the work of several scientists showed that DNA carries all of the cell’s instructions </li></ul>
  3. 3. <ul><li>In 1953, _________ and __________ figured out the structure of DNA and how DNA copies itself </li></ul><ul><li>A DNA molecule looks like a _______ ________ or __________ __________ </li></ul><ul><li>Because of the shape of a DNA molecule, it is often called a _________ ___________ </li></ul><ul><li>The 2 sides of the DNA ladder are made up of a sugar called _______, alternating with molecules known as ________. </li></ul>
  4. 5. <ul><li>There are 4 kinds of nitrogen bases: </li></ul><ul><ul><li>A = </li></ul></ul><ul><ul><li>T = </li></ul></ul><ul><ul><li>G = </li></ul></ul><ul><ul><li>C = </li></ul></ul><ul><li>See figure 20. During DNA replication, a DNA molecule __________ between its paired bases. </li></ul><ul><li>DNA replication begins when the 2 sides of DNA molecule _______ and separate, like a zipper unzipping. </li></ul>
  5. 6. <ul><li>The order of the ______ _______ in each new DNA molecule will exactly match the order of the orginal DNA molecule. </li></ul>

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