DNA Structure and Replication Lecture Understanding
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Questions and Answers

Which type of nucleic acid is the primary carrier of hereditary information?

  • Deoxyribonucleic acid (DNA) (correct)
  • Ribonucleic acid (RNA)
  • Messenger RNA (mRNA)
  • Transfer RNA (tRNA)
  • Who demonstrated that DNA composition varies from one species to the next?

  • James Watson
  • Maurice Wilkins
  • Chargaff (correct)
  • Rosalind Franklin
  • What is the concept of heredity and 'genes' predating acceptance of DNA as the mechanism referred to as?

  • Genetic ancestry
  • Pre-genomic inheritance (correct)
  • Pre-DNA genetic theory
  • Pre-DNA heredity
  • Which carbon sugar is present in DNA nucleotides?

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

    What method did Rosalind Franklin and Maurice Wilkins use to investigate the structure of DNA?

    <p>X-ray diffraction</p> Signup and view all the answers

    What are the monomers making up the polymers of nucleic acids called?

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

    Which nitrogenous base always pairs with thymine in DNA?

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

    For what purpose did Chargaff's rules serve as evidence?

    <p>'Genetic material' made credible candidate for diversity</p> Signup and view all the answers

    What is the central dogma of molecular biology?

    <p>'DNA makes RNA makes protein'</p> Signup and view all the answers

    What did the 1962 Nobel Prize in Physiology and Medicine recognize?

    <p>Research on DNA structure using X-ray diffraction</p> Signup and view all the answers

    What is the primary structure of DNA?

    <p>The sequence of the bases in DNA</p> Signup and view all the answers

    Which process helps to protect DNA from damage and allows chromosomes to be mobile during cell division?

    <p>Supercoiling of chromatin</p> Signup and view all the answers

    What is the function of nucleosomes in DNA?

    <p>To wrap the DNA helix around histone proteins</p> Signup and view all the answers

    Which protein is responsible for linking nucleosomes to form a string of chromatosomes?

    <p>Histone H1</p> Signup and view all the answers

    What is the major factor stabilizing DNA structure?

    <p>Base pairing</p> Signup and view all the answers

    What is the primary role of histones in relation to DNA?

    <p>To coil DNA around proteins</p> Signup and view all the answers

    What is the function of dNTPs in DNA synthesis?

    <p>Addition of dNTPs forms phosphodiester linkages</p> Signup and view all the answers

    'Right handed helix, B DNA' refers to the ________.

    <p>Secondary structure of DNA</p> Signup and view all the answers

    'Chromatin will then supercoil during cell division to form chromosomes that are visible (when stained) under microscope' is an example of __________.

    <p>'From DNA to chromosomes' process</p> Signup and view all the answers

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