MCAT Behavioral Sciences Question 54: Answer and Explanation

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Test Information

Question: 54

9. A 19-year old college student is picked up by campus police after shoplifting a large bag of corn chips and a dozen ice cream sandwiches. His eyes are bloodshot. During questioning, he repeatedly asks for water because his mouth is dry, and he cannot stop giggling. What is the psychoactive substance in the drug this student has most likely recently taken?

  • A. Alprazolam
  • B. 3,4-Methylenedioxy-N-methylamphetamine
  • C. Diacetylmorphine
  • D. Tetrahydrocannabinol

Correct Answer: D

Explanation:

The description of the student matches the clinical features of marijuana (cannabis) use: hunger (presumably, based on his loot), redness of the eyes, dry mouth, and euphoria. Marijuana may also cause an increased heart rate, short-term memory loss, paranoia, and—in high doses—hallucinations. Tetrahydrocannabinol is the active substance in marijuana.

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