It is currently 20 Feb 2018, 11:31

Close

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Confirm Cancel

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

Mice that have been given morphine are very likely to

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

Senior Manager
Senior Manager
avatar
Joined: 02 Mar 2012
Posts: 356
Schools: Schulich '16
Re: Mice that have been given morphine are very likely to [#permalink]

Show Tags

New post 10 Jul 2016, 21:46
B it is.

had 2 contenders A and B

find A is irrelevant as it does not satisfy toxicity anywhere.

B however says that the second drug inhibits and not kill the bacteria, which surely weakens the claim
Board of Directors
User avatar
P
Joined: 17 Jul 2014
Posts: 2729
Location: United States (IL)
Concentration: Finance, Economics
GMAT 1: 650 Q49 V30
GPA: 3.92
WE: General Management (Transportation)
GMAT ToolKit User Premium Member Reviews Badge
Re: Mice that have been given morphine are very likely to [#permalink]

Show Tags

New post 07 Apr 2017, 08:45
seofah wrote:
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.


without a doubt it's B.
B says that new drug "destroys" morphine...definitely a weakener!
Intern
Intern
avatar
B
Joined: 18 Jul 2016
Posts: 1
Premium Member
Mice that have been given morphine are very likely to [#permalink]

Show Tags

New post 15 Aug 2017, 02:37
I go for 'C'

B is actually strengthening the argument, Naltrexone inhibits action of bacteria in response to morphine but still poisoning is occurring which indicates that naltrexone might be toxic to certain type of bacteria .

Can anyone pl help here?
Manager
Manager
User avatar
G
Joined: 15 Dec 2015
Posts: 120
GMAT 1: 660 Q46 V35
GPA: 4
WE: Information Technology (Computer Software)
Re: Mice that have been given morphine are very likely to [#permalink]

Show Tags

New post 21 Aug 2017, 21:42
Explanation:

The argument states that naltrexone is harmful for many strains of bacteria. The evidence to support this conclusion is that when mice were given this new drug along with morphine, they had fewer cases of blood poisoning than they did in situations where the mice were given only morphine, which triggered harmful intestinal bacteria to mix with the blood of the mice. We need to prove that despite the reduction in the incidences of blood poisoning after the administration of the drug, the new drug has not damaging effect on the harmful bacteria.

Whether the new drug moves or not is irrelevant in knowing its effect on the bacteria.
CORRECT. As per this option, the new drug does not kill harmful bacteria. Rather, it only hampers the movement of these bacteria to the blood of the mice. Thus, whereas this new drug can be said to be good for the mice, since it prevents the cases of blood poisoning, it does not have a direct damaging effect on the harmful bacteria itself. This helps weaken the conclusion.
Mice which are given only the new drugs have the same chances of being bold poisoned. This will only prove the negative effect of the new drug on the mice. But this still does not clarify the relation between the new drug and the harmful bacteria.
We are not probing into the number of harmful effects of morphine.
‘Other causes of blood poisoning’ is again out of scope.
Intern
Intern
avatar
B
Joined: 18 Jun 2017
Posts: 49
GMAT 1: 660 Q39 V40
GMAT 2: 700 Q45 V41
GMAT ToolKit User
Mice that have been given morphine are very likely to [#permalink]

Show Tags

New post 05 Dec 2017, 03:14
I'm sorry but I don't get B. I think my confusion stems from the use of 'inhibit'

"Naltrexone inhibits morphine from triggering the migration of intestinal bacteria into the bloodstream."

If Naltrexone inhibits morphine from triggering the migration of bacteria into the bloodstream, wouldn't that mean it completely prevents bacteria from getting through? (inhibit usually means completely stops/prevents).

Yet in the passage, it says the combination of the two drugs reduces poisoning, but doesn't completely stop it.

"However, when mice are given both morphine and the new drug naltrexone, blood poisoning is much less frequent, although it does still occur."

So blood poisoning does still occur.

If naltrexone inhibits bacteria from getting into the system, what accounts for the cases where blood poisoning still occurs?

A might be the best answer of the lot, but this still stuck out as a glaring flaw for me and on the exam i'd be very uncomfortable confirming it as an answer. Anyone care to elaborate?
Manager
Manager
User avatar
B
Joined: 20 Apr 2013
Posts: 158
Re: Mice that have been given morphine are very likely to [#permalink]

Show Tags

New post 05 Dec 2017, 03:42
In addition to "stop", apparently "inhibit" can also mean "hinder/resist".

So, that resistance/hindrance might not ultimately result in 100% success (in preventing migration of intestinal bacteria into the bloodstream).
1 KUDOS received
Intern
Intern
avatar
B
Joined: 17 Aug 2017
Posts: 8
Mice that have been given morphine are very likely to [#permalink]

Show Tags

New post 05 Dec 2017, 05:51
1
This post received
KUDOS
[quote="seofah"]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.



A. Incorrect. It is irrelevant to know the passage process of Naltrexone. It can still turnout to be toxic to certain type of bacteria
B. Correct. If this is true, then Nal. is not actually toxic to bacteria but inhibiting Mor. to make the reaction
C. Incorrect. Magnitude of the risk is irrelevant here. This simply doesn't help us evaluate whether Nal. is toxic to bacteria or not.
D. Incorrect. We don't care about other effects of Mor.
E. Incorrect. Again, we cannot infer from his whether Nal. is toxic to Bacteria or not.

Hope this helps!
Senior Manager
Senior Manager
avatar
G
Joined: 26 Dec 2015
Posts: 285
Location: United States (CA)
Concentration: Finance, Strategy
WE: Investment Banking (Venture Capital)
Re: Mice that have been given morphine are very likely to [#permalink]

Show Tags

New post 03 Feb 2018, 11:33
once you take a step back from all the technical info in this passage (or maybe its just me that got bogged down in it initially), i think there's a simple way to think about this argument.

basically, blood poisoning happens when bacteria go into bloodstream. makes sense, right? now, researchers predict that a drug will be toxic to certain types of bacteria...what does this mean? this means that the drug will destroy some bacteria that would otherwise enter the bloodstream and cause blood poisoning.

in other words, the researchers are coming up with a reason as to HOW this drug can curb blood poisoning. since we are asked to WEAKEN the question, we need to come up with ANOTHER WAY the drug can curb blood poisoning.
Re: Mice that have been given morphine are very likely to   [#permalink] 03 Feb 2018, 11:33

Go to page   Previous    1   2   [ 28 posts ] 

Display posts from previous: Sort by

Mice that have been given morphine are very likely to

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.