DNA Sequencing Methods Quiz
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Questions and Answers

What is the purpose of DNA sequencing?

  • To study the structure of RNA molecules.
  • To produce genetically modified organisms.
  • To determine the base sequence of DNA fragments that have been cloned and purified in the laboratory. (correct)
  • To analyze protein-protein interactions.

Which method of DNA sequencing is more commonly used today?

  • Chain termination (Sanger sequencing) method. (correct)
  • Agarose gel electrophoresis method.
  • Chemical degradation method.
  • Next Generation Sequencing (NGS).

What is the principle underlying the chain termination method of DNA sequencing?

  • Double-stranded DNA molecules are amplified using PCR.
  • Single-stranded DNA molecules that differ in length by just a single nucleotide can be separated using agarose gel electrophoresis. (correct)
  • DNA fragments are labeled with fluorescent tags.
  • DNA is denatured using heat.

When were two separate methods for sequencing DNA developed?

<p>1977 (D)</p> Signup and view all the answers

What is the purpose of agarose gel electrophoresis in DNA sequencing?

<p>To separate single-stranded DNA molecules that differ in length by just a single nucleotide. (D)</p> Signup and view all the answers

What were the two methods for sequencing DNA developed in 1977?

<p>Chain termination (Sanger sequencing) method and the chemical degradation method. (C)</p> Signup and view all the answers

What is the purpose of Next Generation Sequencing (NGS)?

<p>To sequence DNA more quickly and at a lower cost than traditional Sanger sequencing. (C)</p> Signup and view all the answers

What are the components required for Sanger DNA sequencing?

<p>DNA template, primer, DNA polymerase, deoxynucleotides, and dideoxynucleotides (A)</p> Signup and view all the answers

What is the purpose of dideoxynucleotides in Sanger DNA sequencing?

<p>To terminate DNA strand elongation at specific nucleotides (A)</p> Signup and view all the answers

What is the main advantage of Next Generation DNA sequencing (NGS) over Sanger sequencing?

<p>Enables the interrogation of hundreds to thousands of genes at one time in multiple samples (A)</p> Signup and view all the answers

Which technology is associated with an optical detection system for nucleotide incorporation during DNA synthesis in NGS?

<p>Automated cycle sequencing (D)</p> Signup and view all the answers

What is essential for determining the nucleotide sequence of a gene of interest?

<p>DNA sequencing (C)</p> Signup and view all the answers

Which sequencing technology is considered as a gold standard?

<p>Sanger sequencing (C)</p> Signup and view all the answers

What is necessary for a successful sequencing experiment?

<p>Understanding of PCR and gel electrophoresis techniques (C)</p> Signup and view all the answers

What is the purpose of the primer in Sanger DNA sequencing?

<p>To initiate DNA synthesis at the unknown DNA template (D)</p> Signup and view all the answers

Which type of cell culture is known for its capacity for proper protein folding, assembly, and post-translational modification?

<p>Mammalian cell culture (A)</p> Signup and view all the answers

Which type of cell culture is associated with the production of most vaccines?

<p>Bacterial cell culture (B)</p> Signup and view all the answers

Which type of cell line is commonly used in the production of recombinant protein pharmaceuticals?

<p>Immortalized Chinese hamster ovary (CHO) cells (A)</p> Signup and view all the answers

What is a main disadvantage associated with mammalian cell cultures for protein production?

<p>Expensive production process (D)</p> Signup and view all the answers

What are the principal contaminants of cell culture mentioned in the text?

<p>Both biological and chemical contaminants (A)</p> Signup and view all the answers

Which type of cell culture offers the possibility of high-concentration of target compounds and rapid production of biomass?

<p>Plant cell culture (B)</p> Signup and view all the answers

What is the most commonly used system for the production of recombinant proteins for clinical applications?

<p>Mammalian cell culture (D)</p> Signup and view all the answers

Which cell culture system is known for its continuous production capability?

<p>Plant cell culture (B)</p> Signup and view all the answers

Which type of cell culture is associated with the production of biopharmaceuticals using immortalized Chinese hamster ovary (CHO) cells?

<p>Mammalian cell culture (C)</p> Signup and view all the answers

Which type of cell culture is known for its easier extraction protocols and reduced need for aggressive solvents?

<p>Plant cell culture (B)</p> Signup and view all the answers

Which type of cell culture is known for its capacity for rapid biomass production?

<p>Plant cell culture (D)</p> Signup and view all the answers

Which type of cell culture is known for being the dominant system for the production of recombinant proteins for clinical applications?

<p>Mammalian cell culture (B)</p> Signup and view all the answers

What is the purpose of a bioreactor in biotechnology?

<p>To scale up the growth of cells and production of biopharmaceuticals (A)</p> Signup and view all the answers

Which phase of the bacterial life cycle involves the bacteria learning to use available food and turning on appropriate genes for growth?

<p>Lag phase (D)</p> Signup and view all the answers

What is the main advantage of understanding the bacterial life cycle in bioproduct production?

<p>Optimizing the production process (A)</p> Signup and view all the answers

What is the key feature of cell culture in biotechnology?

<p>Growing cells under controlled conditions outside their natural environment (B)</p> Signup and view all the answers

What are the commonly used bioreactors for scaling up cell growth and biopharmaceutical production?

<p>Continuous stirred-tank reactor, Air-lift bioreactor, Fixed-bed bioreactor, Hollow fiber perfusion bioreactor (A)</p> Signup and view all the answers

What is the main purpose of biotechnology's dependence on cell cultivation techniques?

<p>To obtain bioproducts, biologics, and biopharmaceuticals (A)</p> Signup and view all the answers

What is the complex process by which cells are grown under controlled conditions, generally outside of their natural environment?

<p>Cell culture (C)</p> Signup and view all the answers

What is the name given to the phase in the bacterial life cycle where the bacteria turn on the appropriate genes for growth?

<p>Lag phase (A)</p> Signup and view all the answers

Which type of cells are heavily used in biotechnology for the production of bioproducts, biologics, and biopharmaceuticals?

<p>Prokaryotic and eukaryotic cells (A)</p> Signup and view all the answers

What is the primary function of bioreactors in biotechnology?

<p>Scaling up the growth of cells and production of biopharmaceuticals (C)</p> Signup and view all the answers

What is the significance of understanding how bacteria grow in bioproduct production?

<p>Optimizing the production process (B)</p> Signup and view all the answers

What is the key feature of cell culture in biotechnology?

<p>Growing cells under controlled conditions outside their natural environment (C)</p> Signup and view all the answers

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