Pineal Gland and Melatonin Quiz
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Questions and Answers

What is the main hormone secreted by the pineal gland?

  • Melatonin (correct)
  • Estrogen
  • Insulin
  • Adrenaline

    • Where is the pineal gland located in the mammalian brain?

  • Near the center (correct)
  • Frontal lobe
  • Temporal lobe
  • Occipital lobe

    • What biological function is associated with the pineal gland hormone, melatonin?

  • Blood clotting
  • Digestion
  • Biological rhythms (correct)
  • Muscle growth

    • What is the primary role of CREB in the cell?

    <p>Facilitating RNA and protein synthesis</p> Signup and view all the answers

    What is the effect of phosphorylation on CREB's transcriptional activity?

    <p>Greatly potentiates its transcriptional activity</p> Signup and view all the answers

    Which signaling pathways converge to activate kinases that phosphorylate CREB?

    <p>PKA, Ca2+/calmodulin kinase IV, and MAP kinase</p> Signup and view all the answers

    What is the time frame required for the accumulation of new proteins as a result of second messengers?

    <p>Hours to days</p> Signup and view all the answers

    Where does RNA serve as mRNA for translation into protein in the cell?

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

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