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Author Question: The amino acid tryptophan is the precursor to which neurotransmitter? a. dopamine b. endorphin c. ... (Read 116 times)

jho37

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The amino acid tryptophan is the precursor to which neurotransmitter?
 
  a. dopamine
 b. endorphin
 c. serotonin
 d. nitric oxide

Question 2

Birth-control pills prevent pregnancy by interfering with the usual feedback cycle between the ovaries and the pituitary.
 
  a. True
  b. False
  Indicate whether the statement is true or false



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ndhahbi

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Answer to Question 1

c

Answer to Question 2

True





 

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