Lac Operon and Pseudo-Operators
3 Questions
1 Views

Lac Operon and Pseudo-Operators

Created by
@BestPerformingVitality

Podcast Beta

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the role of the 'pseudo-operator' sequences within the lac operon sequence?

  • Contribute to repression by binding LacI more weakly (correct)
  • Prevent the binding of LacI to LacO
  • Act as an alternative operator for LacI binding
  • Enhance gene expression by binding LacI more strongly

    • How does the presence of two DNA-binding sites in LacI protein tetramer enhance repression?

  • One LacI tetramer could bind two separate operators and generate a looped DNA structure (correct)
  • It promotes the transcription of the lac operon
  • It prevents the binding of LacI to LacO
  • It allows for the simultaneous binding of multiple repressor proteins

    • What experimental evidence supports the concept of DNA looping in the lac operon?

  • Evidence obtained from a variety of laboratories (correct)
  • Observation of enhanced gene expression in lac operon mutants
  • The presence of additional regulatory elements in the lac operon
  • The absence of pseudo-operators in mutant lac operons

    • More Like This

    Genetics and Molecular Biology Quiz
    10 questions

    Genetics and Molecular Biology Quiz

    IngeniousUnderstanding avatar
    IngeniousUnderstanding
    Genetics and Molecular Biology Quiz
    5 questions

    Genetics and Molecular Biology Quiz

    EvaluativePrudence avatar
    EvaluativePrudence
    Genetics and Molecular Biology Quiz
    10 questions

    Genetics and Molecular Biology Quiz

    CalmingCaricature avatar
    CalmingCaricature
    Molecular Biology and Genetics Lecture 2: Structure of DNA
    10 questions

    DNA Structure Quiz: Test Your Knowledge of Molecular Biology

    BrainiestJasper6139 avatar
    BrainiestJasper6139
    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser