Effects of Chemical Mutagens on DNA Replication
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Questions and Answers

What is the role of CFTR protein in epithelial physiology?

  • Regulating blood sugar levels
  • Producing red blood cells
  • Regulating muscle contraction
  • Maintaining epithelial surface hydration (correct)
  • How many amino acids make up the CFTR protein?

  • 2,480
  • 480
  • 1,480 (correct)
  • 148
  • What is the consequence of mutations in the CFTR gene?

  • Enhanced cell hydration
  • Thinning of secretions (correct)
  • Normal luminal pH
  • Increased chloride flow
  • How is cystic fibrosis diagnosed?

    <p>Sweat test and genetic testing</p> Signup and view all the answers

    What happens to secretions when CFTR protein is not functional?

    <p>They become thicker</p> Signup and view all the answers

    Which ion flow is disrupted due to mutations in the CFTR gene?

    <p>Chloride ions into and out of cells</p> Signup and view all the answers

    What does CFTR protein regulate in epithelial physiology?

    <p>Epithelial surface hydration and luminal pH</p> Signup and view all the answers

    What is a direct consequence of the CFTR protein forming a stable 3-D shape?

    <p>Forming an anion channel</p> Signup and view all the answers

    In what bodily fluids is the production affected when the CFTR protein is not functional?

    <p>Sweat, digestive fluids, and mucus</p> Signup and view all the answers

    What specific aspect of sweat do people with cystic fibrosis exhibit abnormally?

    <p>Increased sodium concentration</p> Signup and view all the answers

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