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Introduction to Regulation of Gene Expression quiz #4 Flashcards

Introduction to Regulation of Gene Expression quiz #4
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  • How does positive gene regulation differ from negative gene regulation in terms of gene expression?
    Positive gene regulation increases gene expression by turning genes on, while negative gene regulation decreases gene expression by turning genes off.
  • Why is the regulation of gene expression important for cells?
    Regulation of gene expression is important because it allows cells to control protein synthesis and respond to environmental changes, affecting processes like metabolism and development.
  • What are the two main steps involved in gene expression?
    The two main steps are transcription, where DNA is used to build RNA, and translation, where RNA is used to build a protein.
  • At which stage do prokaryotes primarily regulate gene expression?
    Prokaryotes primarily regulate gene expression at the transcriptional control stage.
  • What is the role of chromatin rearrangements in gene expression regulation?
    Chromatin rearrangements regulate the accessibility of DNA for transcription by altering chromatin structure.
  • How does positive gene regulation affect gene expression?
    Positive gene regulation increases gene expression by turning genes on, leading to a higher rate of the gene's final product being made.
  • What is the effect of negative gene regulation on gene expression?
    Negative gene regulation decreases gene expression by turning genes off, resulting in a lower rate of the gene's final product being made.
  • How many key stages of gene expression regulation are there, and can eukaryotes regulate at all of them?
    There are five key stages of gene expression regulation, and eukaryotes can regulate gene expression at all five stages.
  • Why is the regulation of gene expression important for cells?
    Regulation of gene expression allows cells to control protein synthesis and respond to environmental changes, impacting metabolism and development.
  • What does post-transcriptional control refer to in gene expression regulation?
    Post-transcriptional control refers to the regulation of modifications to RNA after transcription has occurred.