Author Question: In many modern hospitals, the blood of newborn infants is routinely screened for high levels of ... (Read 73 times)

fox

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In many modern hospitals, the blood of newborn infants is routinely screened for high levels of
 
  A) phenylalanine.
  B) phenylpyruvic acid.
  C) phenylalanine hydroxylase.
  D) all of the above
  E) both B and C

Question 2

The first twittering efforts of young songbirds are often called
 
  A) clucking.
  B) sing-song.
  C) babbling.
  D) subsong.
  E) dialectic.



mceravolo

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Answer to Question 1

Answer: A

Answer to Question 2

Answer: D



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