PCR in Biological Sciences Practical Session
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Questions and Answers

What is the optimum length range for typical primers?

  • 28-32 bases
  • 25-30 bases
  • 10-15 bases
  • 18-22 bases (correct)

What is the recommended GC content for typical primers?

  • 40%
  • 60%
  • 30%
  • 50% (correct)

What does the Tm of a primer pair indicate?

  • Temperature required to break the hydrogen bonds (correct)
  • Amount of DNA to be replicated
  • Number of primer pairs needed for PCR
  • Duration of the PCR process

What is the purpose of the denaturation step in PCR?

<p>Separate the double-stranded template DNA (D)</p> Signup and view all the answers

In standard PCR, what is required to visualize the DNA after amplification?

<p>Ethidium bromide and a UV light source (A)</p> Signup and view all the answers

What is the main purpose of Polymerase Chain Reaction (PCR)?

<p>To create billions of copies of a specific DNA sequence (C)</p> Signup and view all the answers

Which enzyme is commonly used in most types of PCR?

<p>Taq polymerase (D)</p> Signup and view all the answers

What is the role of synthetic oligonucleotide primers in PCR?

<p>To amplify DNA fragments (B)</p> Signup and view all the answers

What is the function of the thermal cycler (PCR machine) in PCR?

<p>To regulate the temperature for DNA amplification (B)</p> Signup and view all the answers

What must be included in a PCR reaction mixture?

<p>Thermostable Taq polymerase, synthetic oligonucleotide primers, and DNA template (A)</p> Signup and view all the answers

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