Sutherland and Colleagues' Cellular Signaling Pathway
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Questions and Answers

Which process involves the detection of a signaling molecule that binds to a receptor protein on the cell surface?

  • Activation of cellular response
  • Response
  • Reception (correct)
  • Transduction
  • What is the second step in cell signaling, as explained by Sutherland and colleagues?

  • Reception
  • Activation of cellular response
  • Response
  • Transduction (correct)
  • Which part of the cell signaling process involves the activation of cellular response?

  • Transduction
  • Response (correct)
  • Reception
  • Relay molecules
  • What happens in response to the transduced signal in the target cell?

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

    What is altered by the binding of the signaling molecule in cell signaling?

    <p>Receptor protein</p> Signup and view all the answers

    Which step in cell signaling often occurs in a series of steps?

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

    What is the primary purpose of signal amplification in signaling pathways?

    <p>To increase the number of activated products at each step</p> Signup and view all the answers

    How can the same signaling molecule have different effects in different cell types?

    <p>Different cell types have different collections of signaling proteins that can be activated</p> Signup and view all the answers

    Which of the following best describes the role of scaffolding proteins in signal transduction?

    <p>They enhance the overall efficiency of the response by bringing together the necessary components</p> Signup and view all the answers

    What is the primary mechanism by which signal transduction cascades amplify the cellular response?

    <p>Increasing the number of activated products at each step in the cascade</p> Signup and view all the answers

    How do branching signaling pathways and cross-talk between pathways help the cell coordinate its response to incoming signals?

    <p>They enable the cell to integrate multiple signals and mount an appropriate, coordinated response</p> Signup and view all the answers

    What is the primary role of protein phosphorylation in signal transduction pathways?

    <p>To activate signaling molecules and propagate the signal</p> Signup and view all the answers

    What initiates a series of steps called a signal transduction pathway?

    <p>Binding of a mating factor at the cell surface</p> Signup and view all the answers

    In cellular communication, what is the role of the receptor?

    <p>Respond to external signals</p> Signup and view all the answers

    Which type of cells locate each other using secreted factors specific to each type in the yeast Saccharomyces cerevisiae?

    <p>Cells with different mating types</p> Signup and view all the answers

    What is a key feature shared between the molecular details of signal transduction in yeasts and mammals?

    <p>Similar signal transduction cascades</p> Signup and view all the answers

    In cellular signaling, what is mainly responsible for converting external signals to responses within the cell?

    <p>Protein kinases</p> Signup and view all the answers

    What defines the process of interpreting signals received from other cells and the environment?

    <p>Cell-signaling mechanisms</p> Signup and view all the answers

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