Josh enjoys chewing tobacco, while his friend Amy smokes cigarettes. One half hour after each has used tobacco,
a. all of the effects of the nicotine will have worn off.
b. they are likely to have very different levels of nicotine in their circulation, due to the different methods of administration.
c. their circulating levels of nicotine will be very similar.
d. Amy will need to smoke again, because cigarettes are addictive and chewing tobacco is not.
Question 2
John participates in a drinking game at a friend's weekend party and after a while, finds himself vomiting uncontrollably. Which of the following statements is the best description of John's situation?
a. There is nothing to worry about. Everybody vomits when they drink alcohol at parties.
b. John's blood-brain barrier must be malfunctioning, as this normally would prevent the initiation of vomiting.
c. John has ingested a dangerous amount of alcohol, and his area postrema has initiated vomiting in order to remove remaining alcohol from his stomach.
d. John must have ingested other drugs in addition to alcohol, because alcohol alone will not initiate vomiting.
Jane Goodall first observed Gombe chimpanzees chewing leaves, then dipping the chewed-up “wadge” int
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