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Topic D.5:  Hormones and Metabolism

Understandings:
  • Endocrine glands secrete hormones directly into the bloodstream.
  • Steroid hormones bind to receptor proteins in the cytoplasm of the target cell to form a receptor–hormone complex.
  • The receptor–hormone complex promotes the transcription of specific genes.
  • Peptide hormones bind to receptors in the plasma membrane of the target cell.
  • Binding of hormones to membrane receptors activates a cascade mediated by a second messenger inside the cell.
  • The hypothalamus controls hormone secretion by the anterior and posterior lobes of the pituitary gland.
  • Hormones secreted by the pituitary control growth, developmental changes, reproduction and homeostasis.
Applications
  • Some athletes take growth hormones to build muscles.
  • Control of milk secretion by oxytocin and prolactin.
Nature of Science
  • Cooperation and collaboration between groups of scientists—the International Council for the Control of Iodine Deficiency Disorders includes a number of scientists who work to eliminate the harm done by iodine deficiency.
Powerpoints
d.5_hormones_and_metabolism.pptx
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Homeworks
hormone_hmwk.docx
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Helpful Links & Articles
Virtual Endocrine System
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