AP Biology
Campbell Reading Guide
Name __________________
Date ___________Period ___
Chapter 45: Hormones and the Endocrine System
1. List a few similarities and differences comparing:
a. endocrine system _____________________________________________
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b. nervous system _______________________________________________
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2. Define negative feedback. ____________________________________________
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3. Define positive feedback. _____________________________________________
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4. Hormone and receptor interactions are based on ___________________________
5. Give an example of paracrine signaling between cells.
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6. List the three stages of cell signaling and where each usually occurs.
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7. What is a ligand? ___________________________________________________
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Adapted from the work of Ms. Foglia
8. What do G-proteins-receptors do when activated?
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9. What do tyrosine-kinase receptors do within a cell when activated?
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10. What happens when a ligand-gated channel is stimulated?
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11. List three models for ligand/receptor interactions.
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12. How can steroid hormones initiate cell signaling?
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13. What is the advantage of the phosphorylation cascade?
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14. Identify molecules that serves as “second messengers” in a cell?
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Adapted from the work of Ms. Foglia
15. What does the “second messenger” do in the cell?
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16. List the sequence of steps from signal molecule to cell response that involve
calcium and calmodlin.
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17. Describe a typical cellular response to a cell signaling pathway
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18. How do duct and ductless glands differ? _________________________________
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19. What stimulates the anterior pituitary? __________________________________
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20. Elaborate on the role of the hypothalamus. _______________________________
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21. What are the functions of the glands:
a. Thyroid _____________________________________________________
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b. Parathyroid __________________________________________________
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Adapted from the work of Ms. Foglia
22. What happens when there is an iodine deficiency?
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23. Describe the function of the thymus gland.
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24. What are the two mechanisms that stimulate the adrenal gland?
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25. Describe several actions caused by the release of epinephrine.
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26. What is the role of the gonadotropic hormones in males and females?
a. FSH _______________________________________________________
______________________________________________________________
b. LH ________________________________________________________
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27. What hormones are responsible for the secondary sex traits in males and females?
_____________________________________________________________________
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Adapted from the work of Ms. Foglia
Adapted from the work of Ms. Foglia