Author Question: Roberto started using crack cocaine last year. At first, he only smoked a small amount, but now he ... (Read 131 times)

sc00by25

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Roberto started using crack cocaine last year. At first, he only smoked a small amount, but now he requires much more to achieve the same feeling. This phenomenon is called ____.
 
  a. Heavy use
  b. Withdrawal
  c. Tolerance
  d. Intoxication

Question 2

One neurotransmitter that is universally affected b drugs of abuse is ______.
 
  a. Serotonin
  b. Dopamine
  c. MDMA
  d. Gamma Aminobutyric Acid



sarah_brady415

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Answer to Question 1

Answer: c.

Answer to Question 2

Answer: b.



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