Signal Transduction Pathways Quiz
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Questions and Answers

What is the mechanism by which a cell receives, acts on, and alters its behavior in response to a signal from another cell called?

  • Cell signaling
  • Cellular reception
  • Signal transduction (correct)
  • Intercellular communication
  • What are the natural extracellular ligands that bind and activate receptors called?

  • First messengers (correct)
  • Receptor initiators
  • Surface binders
  • Primary activators
  • Which of the following is an example of a natural extracellular ligand?

  • Hormones (correct)
  • Antibodies
  • Nucleic acids
  • Enzymes
  • When a natural extracellular ligand binds to its specific receptor on the surface of a target cell, it initiates a chain of events. What term is used to refer to these ligands in this context?

    <p>First messengers</p> Signup and view all the answers

    Which of the following is NOT included in the ligands that are naturally found outside the cells and can bind to specific receptors on the surface of target cells?

    <p>Cytosolic enzymes</p> Signup and view all the answers

    What is the term used to refer to the mechanism by which a cell receives, acts on, and alters its behavior in response to a signal from another cell?

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

    Which of the following is an example of a natural extracellular ligand?

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

    What are the natural extracellular ligands that bind and activate receptors called?

    <p>First messengers</p> Signup and view all the answers

    Which of the following is NOT included in the ligands that are naturally found outside the cells and can bind to specific receptors on the surface of target cells?

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

    When a natural extracellular ligand binds to its specific receptor on the surface of a target cell, it initiates a chain of events. What term is used to refer to these ligands in this context?

    <p>First messengers</p> Signup and view all the answers

    Study Notes

    Cell Signaling

    • Cell signaling is the process by which a cell receives, acts on, and alters its behavior in response to a signal from another cell.

    Ligands and Receptors

    • Natural extracellular ligands are molecules that bind and activate receptors on the surface of target cells.
    • Hormones, neurotransmitters, and growth factors are examples of natural extracellular ligands.
    • When a natural extracellular ligand binds to its specific receptor on the surface of a target cell, it initiates a chain of events.
    • These ligands are also referred to as signaling molecules or agonists.

    Exclusions

    • Vitamins are not included in the ligands that are naturally found outside the cells and can bind to specific receptors on the surface of target cells.

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    Description

    Test your knowledge of inter and intracellular signal transmission with this quiz! Explore the mechanisms by which cells receive, respond to, and modify their behavior in reaction to external signals. Gain a deeper understanding of signal transduction pathways and the role of various ligands such as hormones and neurotransmitters.

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