Molecular Biology: Gel Electrophoresis Quiz
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Questions and Answers

What is the main purpose of gel electrophoresis?

  • To visualize RNA strands
  • To separate DNA fragments by size (correct)
  • To replicate DNA segments in host cells
  • To link foreign DNA to plasmids

    • Which of the following is commonly used as a medium for gel electrophoresis?

  • Agarose (correct)
  • Silica gel
  • Sodium alginate
  • Polyacrylamide

    • What is a characteristic of plasmids as cloning vectors?

  • They can have one to a hundred or more copies per cell (correct)
  • They cannot replicate within bacterial cells
  • They always contain multiple insert sites
  • They have a low copy number in host cells

    • How do DNA fragments appear after being visualized using ethidium bromide?

    <p>They appear as bright, orange colored bands</p> Signup and view all the answers

    Why is it important to cut the vector and source DNA with the same restriction enzyme?

    <p>To ensure the DNA fragments can be linked together</p> Signup and view all the answers

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