Cell Signaling and Signaling Molecules Quiz
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Questions and Answers

What is the main function of cell signaling?

  • To allow cells to communicate with each other (correct)
  • To produce energy for the cells
  • To store genetic information
  • To regulate cell division

    • What are the main types of cell surface receptors mentioned in the text?

  • Ligand-gated receptors and Enzyme-linked receptors
  • Intracellular receptors and Extracellular receptors
  • Ion channel receptors and Nuclear receptors
  • G protein-coupled receptors (GPCRs) and Tyrosine kinase-linked receptors (TKs) (correct)

    • What are the types of cell signaling based on the distance over which they occur?

  • Close-range, long-range, adjacent, distant, and local
  • Autocrine, juxtacrine, paracrine, endocrine, and neurocrine (correct)
  • Direct, indirect, close, distant, and local
  • Primary, secondary, tertiary, quaternary, and quinary

    • What are signaling molecules?

    <p>Molecules released by cells to communicate with other cells</p> Signup and view all the answers

    What happens when a signaling molecule binds to an ion channel-linked receptor?

    <p>The ion channel pore opens</p> Signup and view all the answers

    Where are nuclear receptors located?

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

    What is the role of the cyclic AMP (cAMP) pathway?

    <p>Regulating cell growth and metabolism</p> Signup and view all the answers

    How is the cAMP pathway activated?

    <p>By a G protein-coupled receptor (GPCR)</p> Signup and view all the answers

    What does protein kinase A (PKA) do in the cAMP pathway?

    <p>Phosphorylates other proteins</p> Signup and view all the answers

    What regulates the activity of adenylate cyclase?

    <p>Hormones, neurotransmitters, and growth factors</p> Signup and view all the answers

    What is the role of phosphodiesterase in the cAMP pathway?

    <p>It breaks down cAMP</p> Signup and view all the answers

    Why is the cAMP pathway important?

    <p>It is involved in a variety of cellular processes</p> Signup and view all the answers

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