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Thread: Mice CR

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    Eager! madkris135's Avatar
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    Mice CR

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    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.

    personal statement: i dont have the answer

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    Within my grasp! prakul's Avatar
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    imo C

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    is Naltrexone toxic to cetrain type of bacteria?
    ans should be no to weaken argument.
    a:doesnt ans the above question. it directly go to intestine...and kill or not kill?
    b.It prohibits other drug to trigger it send bacteria to blood. which means Natre...itself is not toxic.
    c.when Nitr..is given alone chances of disease are same as without any drug...means it is ineffective--doesnt ans our question
    d. out of scope as it talks abt Morphine
    e. no evidence is given relvant to this. evidence is about migration of bacteria which causes blood disease.

    ANS B.

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    An Urch Guru Pundit Swami Sage
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    I picked C

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    Within my grasp! dementor's Avatar
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    B it is. The cause of toxication is the migration of bacteria into the bloodstream and if Naxlotrin restricts it then the toxication cannot happen. Hence B weakens the conclusion.

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    An Urch Guru Pundit Swami Sage
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    B is the correct answer.
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    Within my grasp! hangptt's Avatar
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    Official Answer is B.

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    I pick B.

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    Yes ,, My choice is also 'B'.

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    B clear

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