Bacterial Recombination and Plasmid Gene Transfer
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Questions and Answers

What is the gene of an operon that codes for a protein repressor called?

  • Operator
  • Regulator (correct)
  • Structural locus
  • Promoter

    • To synthesize an inducible enzyme, what is required?

  • Corepressor and repressor binding to operator
  • Repressor alone bound to operator
  • Substrate bound to promoter
  • Substrate bound to repressor (correct)

    • What inhibits the synthesis of a repressible enzyme?

  • Repressor alone bound to operator (correct)
  • Substrate bound to promoter
  • Substrate bound to repressor
  • Corepressor and repressor binding to operator

    • Which type of enzyme synthesis is inhibited by substrate bound to repressor?

    <p>Inducible enzyme</p> Signup and view all the answers

    What is the main function of the gene that codes for a protein repressor in an operon?

    <p>Inhibit gene expression</p> Signup and view all the answers

    Which cell can transfer the most DNA?

    <p>Hfr cell</p> Signup and view all the answers

    What is a key characteristic of F+ cells in bacterial conjugation?

    <p>Presence of specialized structures like pili</p> Signup and view all the answers

    Which process involves the direct transfer of DNA from one bacterium to another through a pilus?

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

    Which type of cell is often used as a donor in bacterial conjugation?

    <p>Hfr cell</p> Signup and view all the answers

    What is the main function of pili in bacterial conjugation?

    <p>Facilitating DNA transfer between cells</p> Signup and view all the answers

    Which microbial structures are often associated with conferring critical capabilities to bacteria and archaea?

    <p>Endospores and flagella</p> Signup and view all the answers

    What are the two main targets of riboswitches and repressors/inducers, respectively?

    <p>Translation; transcription</p> Signup and view all the answers

    How do short interfering RNAs impact gene expression in eukaryotes?

    <p>Binding to mRNAs and preventing translation</p> Signup and view all the answers

    Which process differs among Bacteria, Archaea, and Eukaryotes despite the central dogma being universal?

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

    In gene regulation, what do riboswitches primarily target?

    <p>Translation process</p> Signup and view all the answers

    What is the main impact of short interfering RNAs on gene expression?

    <p>Inhibiting translation</p> Signup and view all the answers

    What is the viral nucleic acid most likely based on the analysis of the nitrogenous bases?

    <p>double-stranded RNA</p> Signup and view all the answers

    What is the primary role of repressors and inducers in gene regulation?

    <p>Affecting transcription</p> Signup and view all the answers

    Which type of nucleic acid is not typically found in viruses?

    <p>double-stranded RNA</p> Signup and view all the answers

    In which cells do replication, transcription, and translation processes differ?

    <p>Bacteria, Archaea, and Eukaryotes</p> Signup and view all the answers

    Which aspect influences the regulation of gene expression?

    <p>External and internal molecular cues only</p> Signup and view all the answers

    What determines the replication cycles of viruses?

    <p>Unique structures and genomes</p> Signup and view all the answers

    What Bloom's level does the analysis of the nitrogenous bases of the viral nucleic acid fall under?

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

    What is the process where a pilus connection is formed between F+ and F- cells?

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

    Which process involves the transfer of DNA fragments from a dead cell to a live, competent recipient cell?

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

    What can lead to the development of virulent, toxin-producing bacterial strains?

    <p>Specialized transduction</p> Signup and view all the answers

    Which factor is part of the F+ donor chromosome in plasmid gene transfer?

    <p>C.F factor</p> Signup and view all the answers

    What type of gene transfer involves the immense variety of microenvironments selecting for a huge diversity of microorganisms?

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

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