Biology Forums - Study Force

Predict which hormone would produce longer lasting effects:
 
  A.
  Hormone A, which activates a G protein.
 
  B.
  Hormone B, which binds to a nuclear receptor.
 
  C.
  Hormone C, which stimulates the formation of a second messenger.
 
  D.
  Hormone D, which activates adenylate cyclase.

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(Question 2) Which of the following is NOT a regulatory function of the endocrine system?
 
  A. Regulates the rate of metabolism.
  B. Controls development and functions of the reproductive system.
  C. Regulates equilibrium and balance from the inner ear.
  D. Prepares the body for physical activity and stress.
  E. Regulates heart rate and blood pressure.

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(Question 3) Increased testosterone levels reduce the secretion of gonadotropin-releasing hormone from the anterior pituitary. This is an example of
 
  A.
  inhibition of hormone release by humoral stimuli
 
  B.
  inhibition of hormone release by neural stimuli
 
  C.
  inhibition of hormone release by external stimuli
 
  D.
  inhibition of hormonal release by environmental stimuli
 
  E.
  inhibition of hormone release by hormonal stimuli

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(Question 4) Emily is in labor with her first child. The amplitude-modulated system would show her oxytocin levels
 
  A.
  to have a weak signal.
 
  B.
  to have a moderate signal.
 
  C.
  to have a strong signal.
 
  D.
  too weak to measure.

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(Question 5) Thyroid hormones (TH) normally travel in the blood both free and bound to TH-binding proteins. What would you expect to see in the blood work of a patient who had a deficiency of TH-binding protein?
 
  A.
  Normal free TH levels, and low bound TH levels.
 
  B.
  Low free TH levels, and low bound TH levels.
 
  C.
  Low free TH levels, and normal bound TH levels.
 
  D.
  Normal free TH levels, and normal bound TH levels.

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(Question 6) After a meal, blood glucose levels rise and stimulate the release of insulin. What type of stimulation is this example?
 
  A.
  humoral
 
  B.
  neural
 
  C.
  hormonal
 
  D.
  hypothalamic

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(Question 7) Hormone A has entered the cell and binds to a nuclear receptor, while hormone B binds to a membrane receptor on the outside of the cell. Which statement is TRUE? Check all that apply.
 
  Hormone A is in the lipid-soluble category.
  Hormone B is in the lipid-soluble category.
  Hormone B will stimulate the activation of a G protein.
  Hormone A will cause the formation of cAMP.

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(Question 8) Sympathetic neurons can serve as ______ stimuli for hormone release from certain endocrine organs.
 
  A.
  Autocrine
 
  B.
  Humoral
 
  C.
  Paracrine
 
  D.
  Neural

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(Question 9) In ______, a cell increases the number of hormone receptors and becomes more sensitive to the hormone.
 
  A.
  amplification
 
  B.
  positive feedback
 
  C.
  down-regulation
 
  D.
  up-regulation

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(Question 10) A chemical produced in a cell that activates specific processes in response to a hormone interaction with a membrane-bound receptor is referred to as a(n) _____.
 
  A.
  hormone response element
 
  B.
  transcription factor
 
  C.
  messenger RNA
 
  D.
  intracellular mediator

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