Theories of Aging
30 Questions
2 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the main idea behind the mutation theory of aging?

  • Oxidative damage to biological molecules
  • Telomeres being worn away over time
  • Accumulation of mutations in our genome (correct)
  • Losing somatic cells faster than they can get replaced
  • What is the main difference between a genetically modified and engineered organism?

  • The method of alteration used (correct)
  • The location of the alteration
  • The goal of the alteration
  • The type of organism being altered
  • How were the first recombinant organisms produced?

  • By inserting a plasmid into a bacterium
  • By using horizontal gene transfer
  • By using transformation to absorb a plasmid
  • By cutting open a plasmid and inserting a foreign gene (correct)
  • What is the main idea behind the telomere theory of aging?

    <p>Telomeres being worn away over time</p> Signup and view all the answers

    What is the term for an organism that contains DNA from multiple places?

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

    What is the term for the process of E. coli absorbing a plasmid?

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

    What is the primary purpose of gel electrophoresis in PCR?

    <p>To visualize and determine the size of the PCR product</p> Signup and view all the answers

    What is the role of primers in PCR?

    <p>To locate the specific gene in question and bind to its complimentary positions</p> Signup and view all the answers

    What determines the speed of DNA fragments during gel electrophoresis?

    <p>The length of the DNA fragments</p> Signup and view all the answers

    What is the result of repeating the PCR process 20-30 times?

    <p>Millions of copies of the gene of interest</p> Signup and view all the answers

    What is the purpose of the DNA ladder in gel electrophoresis?

    <p>To provide a reference for determining the size of DNA fragments</p> Signup and view all the answers

    What is the primary function of DNA polymerase in PCR?

    <p>To copy the remaining DNA sequence after the primer</p> Signup and view all the answers

    What is the purpose of the tagged nucleotides in Sanger sequencing?

    <p>To stop extension and act as a marker for sequencing</p> Signup and view all the answers

    What is the primary function of DNA polymerase in Sanger sequencing?

    <p>To copy the DNA sequence</p> Signup and view all the answers

    What is the purpose of the electrical current in Sanger sequencing?

    <p>To separate DNA fragments by size</p> Signup and view all the answers

    What is the outcome of allowing the Sanger sequencing process to continue for a long enough time?

    <p>Fragments of varying sizes with tagged nucleotides at every position</p> Signup and view all the answers

    What is the purpose of a GWAS study?

    <p>To identify genetic variations associated with a particular disease</p> Signup and view all the answers

    What happens when a tagged nucleotide gets added to the DNA fragment during Sanger sequencing?

    <p>Extension stops</p> Signup and view all the answers

    What was the primary concern when working with recombinant organisms according to the Asilomar Conference regulations?

    <p>To contain the organisms</p> Signup and view all the answers

    What is the purpose of a reporter gene in genetic engineering?

    <p>To identify where a gene is expressed in a cell</p> Signup and view all the answers

    Why were regulations necessary for working with recombinant organisms?

    <p>Because the risks of using recombinant organisms were unknown</p> Signup and view all the answers

    What is the mechanism of action of Bt corn?

    <p>The toxin binds to a receptor on the surface of the insect's gut and causes fluids to leak out</p> Signup and view all the answers

    What is the purpose of isolating genes from a bacterium in the production of Bt corn?

    <p>To produce a toxin that is insect-specific</p> Signup and view all the answers

    What is the goal of adding a reporter gene to a gene of interest?

    <p>To identify where the gene of interest is being expressed</p> Signup and view all the answers

    What is the main idea behind Social Darwinism?

    <p>The idea that powerful individuals are biologically superior</p> Signup and view all the answers

    What is the purpose of eugenics?

    <p>To produce individuals with desirable traits</p> Signup and view all the answers

    Why are modern races not clearly defined?

    <p>Because of the overlap between different races</p> Signup and view all the answers

    What is the relationship between Social Darwinism and eugenics?

    <p>They are complementary ideologies</p> Signup and view all the answers

    What is the main goal of negative eugenics?

    <p>To eliminate undesirable traits from a population</p> Signup and view all the answers

    What is the historical context of Social Darwinism?

    <p>It was used to justify slavery, imperialism, and social inequalities</p> Signup and view all the answers

    More Like This

    Biological Theories of Aging
    31 questions
    Care of Older Adults: Aging Theories
    40 questions
    Biología del Envejecimiento
    3 questions

    Biología del Envejecimiento

    RoomierGreenTourmaline avatar
    RoomierGreenTourmaline
    Use Quizgecko on...
    Browser
    Browser