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Science Chapter 3 Lesson 1

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  • 11. What are the four bases of DNA?
    guanine, cytosine, adenine, and thymine
  • 1. Who studied the crystal structure of DNA using X-rays?
    Wilkins and Franklin
  • 5. What do you call the smaller subunits of DNA?
    nucleotides
  • 14. What might happen if your cells misread those instructions?
    The instructions may not work and the cell be harmed.
  • 13. Why is it important for proteins to error check the DNA before it is zipped back up?
    Proofreading the DNA before zipping it up ensures that the cell will continue to function properly
  • 7. What base pairs with guanine?
    cytosine
  • 2. The threadlike structures of DNA.
    chromosomes
  • 4. Who built the first correct 3-D model of DNA?
    Watson and Crick
  • 6. What is the other term for twisted ladder?
    double helix
  • 3. What is the basic units of hereditary information?
    genes
  • 10. When the protein strand zips back, what is being formed?
    daughter strand
  • 12. How does the structure of DNA allow it to copy itself?
    DNA unzips and copies, forming two daughter strands
  • 9. What do you call the unzipped strand of protein?
    parent strand
  • 8. What base pairs with adenine?
    thymine