Cell Adhesion Quiz
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Questions and Answers

Which type of cell junction is responsible for barrier function?

  • Communicating Junctions
  • Anchoring Junctions
  • Gap Junctions
  • Occluding or Tight Junctions (correct)
  • What is the protein composition of gap junctions?

  • Claudins and occludins
  • Connexin proteins: connexon channels (correct)
  • Cadherin Family
  • Integrin Family
  • Which cell adhesion molecules are part of the IgG superfamily?

  • Selectins (correct)
  • Cadherins
  • Claudins
  • N-CAM: Neural cell adhesion molecule
  • Which type of junction separates fluids on either side with different chemical compositions?

    <p>Tight Junctions</p> Signup and view all the answers

    Which proteins compose tight junctions?

    <p>Claudins and Occludins</p> Signup and view all the answers

    Which type of junction allows small molecules to pass from one cell to another?

    <p>Gap Junctions</p> Signup and view all the answers

    Which type of anchoring junctions link to the actin cytoskeleton?

    <p>Adherens Junctions</p> Signup and view all the answers

    Which of the following is true about focal adhesions?

    <p>Focal adhesions occur between cells and extracellular matrix.</p> Signup and view all the answers

    What is the function of integrins in focal adhesions?

    <p>Integrins bind to ECM components and link to actin cytoskeleton.</p> Signup and view all the answers

    Which of the following is true about cell adhesion?

    <p>Cell adhesion precedes the formation of cell junctions.</p> Signup and view all the answers

    What are the two distinct mechanisms of cell adhesion binding?

    <p>Homophilic binding and heterophilic binding.</p> Signup and view all the answers

    Which type of anchoring junctions link to the actin cytoskeleton?

    <p>Adherens Junctions</p> Signup and view all the answers

    Which type of junction separates fluids on either side with different chemical compositions?

    <p>Tight Junctions</p> Signup and view all the answers

    Which of the following is true about cell adhesion?

    <p>Anchoring Junctions are a broader category than tight and gap junctions</p> Signup and view all the answers

    Which of the following is true about focal adhesions?

    <p>Focal adhesions link to intermediate filaments</p> Signup and view all the answers

    Which of the following is true about cell-cell adhesion?

    <p>Cell-cell adhesion involves the binding of epithelial cells to each other and to ECM proteins in the Basement membrane through specialized cell surface receptors.</p> Signup and view all the answers

    Which of the following is true about cadherins?

    <p>Cadherins are a type of cell adhesion molecule that mediate cell-cell interactions.</p> Signup and view all the answers

    Which type of junction is responsible for cell:cell interaction in the epithelial tissue?

    <p>Adherens junctions</p> Signup and view all the answers

    Which proteins are involved in the formation of focal adhesions?

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

    What is the function of selectins in the process of inflammatory cell recruitment?

    <p>To initiate weak adhesion events with white blood cells</p> Signup and view all the answers

    What initiates the formation of adherens junctions?

    <p>Tension created by cell attachment through cell surface receptors</p> Signup and view all the answers

    What is the role of cell adhesion receptors in cell sorting mechanisms?

    <p>They allow for and direct cell sorting mechanisms in tissues</p> Signup and view all the answers

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