Mutations and Mobile Genetic Elements
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

Which process involves the uptake of naked foreign DNA from the environment by a bacterial cell?

  • Mutation
  • Conjugation
  • Transduction
  • Transformation (correct)
  • What is a rare event that can occur when two different strains of bacteria are mixed together?

  • Mutation
  • Recombination to show characteristics of both strains (correct)
  • Conjugation
  • Production of a bacteriophage
  • Which process involves the direct transfer of genetic material between two joined bacterial cells?

  • Substitution
  • Missense
  • Conjugation (correct)
  • Insertion
  • What type of DNA can a bacteriophage contain when it infects a bacterial cell?

    <p>Only bacterial DNA</p> Signup and view all the answers

    Which process is mediated by bacteriophages (phages/bacterial viruses)?

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

    In gene transfer, what type of elements involve deletions and insertions in the genome?

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

    What type of mutation affects a single codon or amino acid?

    <p>Missense mutations</p> Signup and view all the answers

    Which mutation type may cause a frame shift and render the protein non-functional?

    <p>Insertions and deletions</p> Signup and view all the answers

    What happens in a silent mutation?

    <p>No change in the amino acid sequence</p> Signup and view all the answers

    How do insertions and deletions typically affect proteins?

    <p>Cause frame shifts and potential non-functionality</p> Signup and view all the answers

    In the context of mutations, what is a missense mutation?

    <p>Changes the structure and function of the protein</p> Signup and view all the answers

    What is the approximate spontaneous mutation rate during DNA replication in E. coli?

    <p>1 mutation per 10 million divisions</p> Signup and view all the answers

    Given that E. coli reproduces at a rate of approximately 2 x 10^10 new cells per day, how many new mutations would be expected per day?

    <p>2000 mutations</p> Signup and view all the answers

    Which factor contributes to the significant impact of new mutations on genetic diversity in bacteria?

    <p>High bacterial proliferation rate</p> Signup and view all the answers

    What is the primary cause of mutations in bacteria?

    <p>Both mistakes during DNA replication and environmental factors</p> Signup and view all the answers

    Which of the following statements about codon redundancy is true?

    <p>It means that not all nucleotide substitutions result in changes to the amino acid sequence of a protein</p> Signup and view all the answers

    Which of the following is NOT a type of mobile genetic element mentioned in the text?

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

    More Like This

    Mutations and DNA Repair Quiz
    36 questions
    Mutations
    21 questions

    Mutations

    MagicalHeliodor avatar
    MagicalHeliodor
    Mutations Practice Flashcards
    10 questions
    Use Quizgecko on...
    Browser
    Browser