dominique11 Posted August 14, 2008 Share Posted August 14, 2008 Mice that have been given morphine are very likely to develop blood poisoning because bacteria that normally reside in the intestine typically respond to morphine by migrating into the bloodstream. However, when mice are given both morphine and the new drug naltrexone, blood poisoning is much less frequent, although it does still occur. These results provide support for researchers’ prediction that naltrexone will turn out to be toxic to certain types of bacteria. Which of the following, if discovered to be true, would most seriously weaken the support for the researchers’ prediction? A. After being administered to mice, naltrexone does not pass from the bloodstream into the intestine. B.Naltrexone inhibits morphine from triggering the migration of intestinal bacteria into the bloodstream. C. Mice that have been given naltrexone but not morphine have no greater risk of developing blood poisoning than do mice that have not been given either substance. D The increased risk of blood poisoning is not the only harmful effect on mice of being given morphine. E. Conditions other than the presence of intestinal bacteria in the bloodstream can cause blood poisoning in mice. Quote Link to comment Share on other sites More sharing options...
coolaman Posted August 14, 2008 Share Posted August 14, 2008 Please re-post the question. It is not propoerly displayed. Quote Link to comment Share on other sites More sharing options...
coolaman Posted August 14, 2008 Share Posted August 14, 2008 This has been discussed earlier. http://www.www.urch.com/forums/gmat-critical-reasoning/83024-mice-naltrexone.html Quote Link to comment Share on other sites More sharing options...
Test Taker Posted August 18, 2008 Share Posted August 18, 2008 OA for this is B but I have reservations about it. But what if Naltroxone itself is causing some bacterial to migrate and B is not answering that. C is answering that by saying that whether you give Naltroxene or not,the risk is the same meaning Naltroxene has no effect on mice. Quote Link to comment Share on other sites More sharing options...
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