DNA Repair: Fixing Mismatched Nucleotides
17 Questions
0 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 consequence of mutations in repair genes?

  • Enhanced DNA transcription efficiency
  • Improved DNA replication fidelity
  • Greater susceptibility to certain types of cancer (correct)
  • Increased resistance to certain types of cancer

    • What is the primary role of repair enzymes in DNA repair?

  • To add new nucleotides to the DNA strand
  • To remove mismatched nucleotides from the DNA strand (correct)
  • To transcribe DNA into RNA
  • To unwind the double helix during DNA replication

    • What is the purpose of DNA polymerase in the DNA repair process?

  • To unwind the double helix during DNA replication
  • To transcribe DNA into RNA
  • To fill in the gap left by the repair enzymes (correct)
  • To remove mismatched nucleotides from the DNA strand

    • What is the result of a failure in DNA repair?

    <p>Mutations and chromosome breaks persist</p> Signup and view all the answers

    What triggers the action of repair enzymes?

    <p>The presence of a mismatched nucleotide</p> Signup and view all the answers

    What is a primary source of genetic variation in organisms?

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

    What type of mutations can cause uncontrolled cell division and lead to cancer?

    <p>Mutations in somatic cells</p> Signup and view all the answers

    What is a common cause of spontaneous mutations during DNA replication?

    <p>Mistakes during DNA copying</p> Signup and view all the answers

    What type of mutation occurs when a base pair is substituted, but the resulting amino acid sequence remains the same?

    <p>Silent mutation</p> Signup and view all the answers

    Which of the following is an example of an environmental factor that can cause mutations?

    <p>UV light exposure</p> Signup and view all the answers

    How do mutations in germ cells affect organisms?

    <p>They can be passed to future generations</p> Signup and view all the answers

    What is the result of an undetected error during DNA replication?

    <p>A mutation in the DNA</p> Signup and view all the answers

    What is the term for agents that increase the rate of mutations?

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

    What type of mutation is caused by the insertion or deletion of base pairs, resulting in a changed reading frame?

    <p>Frameshift mutation</p> Signup and view all the answers

    What is a key factor that determines the effects of a mutation on an organism?

    <p>All of the above</p> Signup and view all the answers

    What is the result of a nonsense mutation?

    <p>A shortened protein is produced</p> Signup and view all the answers

    What is the role of DNA polymerase during DNA replication?

    <p>To detect and repair errors</p> Signup and view all the answers

    More Like This

    DNA Repair Mechanisms Quiz
    36 questions

    DNA Repair Mechanisms Quiz

    CourteousEpiphany avatar
    CourteousEpiphany
    DNA Repair Mechanisms Quiz
    15 questions

    DNA Repair Mechanisms Quiz

    CoherentYeti avatar
    CoherentYeti
    Biochem Lecture 8a
    31 questions

    Biochem Lecture 8a

    AS avatar
    AS
    DNA Repair & Recombination Part-2 Lec 9 Quiz
    10 questions

    DNA Repair & Recombination Part-2 Lec 9 Quiz

    OptimisticTundra avatar
    OptimisticTundra
    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser