Protein Production Techniques Quiz
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Questions and Answers

What is the process of making cells acquire and express a new piece of foreign genetic material called?

  • Transfection
  • Transduction
  • Transformation (correct)
  • Transgenic
  • Which term refers to the organism that has had its genome artificially altered by introducing foreign DNA sequences?

  • Transgene (correct)
  • Transduction
  • Vector/Construct
  • Recombinant protein
  • What is the term for a DNA molecule used to carry a foreign DNA segment into a host cell?

  • Transformation
  • Recombinant plasmid (correct)
  • Transgenic
  • pGLO
  • Which process involves introducing recombinant plasmid to animal eukaryotic cells via artificial means?

    <p>Transfection</p> Signup and view all the answers

    What is the term used for a cell that has taken up the recombinant plasmid and acquired a new trait?

    <p>Transformed cell</p> Signup and view all the answers

    What is the term for the protein produced by the inserted foreign DNA?

    <p>Recombinant protein</p> Signup and view all the answers

    What is the function of the origin of replication in plasmids?

    <p>Helps bacteria make copies of the plasmid</p> Signup and view all the answers

    What is the purpose of antibiotic resistance in genetically engineered bacteria?

    <p>To allow transformed bacteria to survive in the presence of antibiotics</p> Signup and view all the answers

    Where does the GFP chromophore reside within the GFP protein structure?

    <p>At the center of the protein</p> Signup and view all the answers

    What is the primary function of plasmids in genetic engineering?

    <p>To provide a means for scientists to modify DNA</p> Signup and view all the answers

    How is the GFP chromophore described in terms of its structure?

    <p>Comprised of three adjacent amino acids</p> Signup and view all the answers

    What makes the GFP molecule notable in scientific circles?

    <p>Its ability to fluoresce under UV light</p> Signup and view all the answers

    What enables cells with the plasmid to grow in culture media with ampicillin?

    <p>Secretion of Beta-lactamase</p> Signup and view all the answers

    What prevents the GFP gene from being transcribed in the absence of arabinose?

    <p>Blockage of RNA polymerase by AraC</p> Signup and view all the answers

    What is the role of arabinose in the system described?

    <p>Acts as a switch for gene expression</p> Signup and view all the answers

    Why do cells without the plasmid fail to grow on plates with ampicillin?

    <p>They are unable to break down ampicillin</p> Signup and view all the answers

    What happens if cells with the plasmid are grown in culture media without arabinose?

    <p>They will not produce GFP</p> Signup and view all the answers

    Which protein plays a role in switching on the transcription of the GFP gene?

    <p>AraC</p> Signup and view all the answers

    What is the first step in producing a protein of interest?

    <p>Identify a gene for the protein</p> Signup and view all the answers

    What happens after the gene for a protein is identified?

    <p>Put the gene into bacteria</p> Signup and view all the answers

    What is the role of bacteria in producing a protein of interest?

    <p>Transcribe and translate the gene</p> Signup and view all the answers

    Which step involves making a plasmid with the gene for production?

    <p>Purify the protein of interest</p> Signup and view all the answers

    What happens after growing lots of bacteria in the protein production process?

    <p>Purify the protein of interest</p> Signup and view all the answers

    In genetic engineering using plasmids, what does bacterial transformation involve?

    <p>Put the gene into bacteria</p> Signup and view all the answers

    What is the purpose of Hydrophobic Interaction Chromatography (HIC) in GFP purification?

    <p>To isolate the hydrophobic protein of interest, such as GFP.</p> Signup and view all the answers

    What is the purpose of washing less hydrophobic proteins from the HIC column?

    <p>To remove the hydrophobic proteins from the column matrix.</p> Signup and view all the answers

    What is the function of the Elution buffer in HIC chromatography?

    <p>To elute the target protein from the column.</p> Signup and view all the answers

    Why is it important to discard the liquid broth supernatant before resuspending the pellet with TE buffer?

    <p>To avoid contaminating the sample with other proteins.</p> Signup and view all the answers

    Which step ensures that only the hydrophobic protein of interest remains bound to the HIC column?

    <p>Washing with medium salt buffer.</p> Signup and view all the answers

    What is the primary characteristic that enables GFP to be isolated effectively using Hydrophobic Interaction Chromatography?

    <p>Its hydrophobic nature.</p> Signup and view all the answers

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