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Galanin is a protein found in the brain. In an experiment

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Galanin is a protein found in the brain. In an experiment  [#permalink]

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New post 09 Apr 2010, 06:24
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Galanin is a protein found in the brain. In an experiment, rats that consistently chose to eat fatty foods when offered a choice between lean and fatty foods were found to have significantly higher concentrations of galanin in their brains than did rats that consistently chose lean over fatty foods. These facts strongly support the conclusion that galanin causes rats to crave fatty foods.

Which one of the following, if true, most supports the argument?

a) The craving for fatty foods does not invariably rsult in a rats chosing those foods over lean foods.
b) The brains of the rats that consistently chose to eat fatty foods did not contain significantly more fat than did thebrains of rats that consustently choos elean foods.
c) The chemical components are present in both fatty and lean foods
d) The rats that preferred fatty foods had the higher concentrations of galanin in their brains before they were offered fatty foods.
e) rats that metabolize fat less efficiently than do other rats develop high concentrations of galanin in their brains.

Source: Powerscore RC Bible
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Re: Galanin is a protein found in the brain. In an experiment  [#permalink]

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New post 12 Feb 2017, 04:10
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sumanainampudi wrote:
Doesnt the option A says that "craving" doesnt lead the rat to choose fatty food ?
I felt here the alternate opinion is eliminated. Craving doesnt lead rat to choose fatty foods but its the galanin which is responsible to choose fatty food. I didnot understand the phrase "doesnot invariably"

Please help.


Does not invariably = variably.

This means that it is not always the case the craving is the cause that rats choose fatty foods - i.e., there may be some other factor that results in such choice. Thus option does not eliminate an alternate cause but contrarily suggests that an alternate cause is possible.

Thus option A weakens the conclusion.
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Re: Galanin is a protein found in the brain. In an experiment  [#permalink]

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New post 09 Apr 2010, 08:23
IMO it is D.

Conclusion is "galanin causes rats to crave fatty foods" and those rats chose to eat fatty food over lean food.

a) The craving for fatty foods does not invariably rsult in a rats chosing those foods over lean foods.
>> weakens the argument.
b) The brains of the rats that consistently chose to eat fatty foods did not contain significantly more fat than did thebrains of rats that consustently choos elean foods.
>> Content of fat in brain is of no use for conclusion.
c) The chemical components are present in both fatty and lean foods
>> Not relevant for conclusion
d) The rats that preferred fatty foods had the higher concentrations of galanin in their brains before they were offered fatty foods.
>> Yes. If this statement is correct, then we can safely concluse that galanin causes rats to crave fatty foods and so they eat the fatty food.
e) rats that metabolize fat less efficiently than do other rats develop high concentrations of galanin in their brains.
>> Rat's metabolism has no place in conclusion.
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New post 09 Apr 2010, 08:26
Thanks mads. Much appreciated. :P
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Re: Galanin is a protein found in the brain. In an experiment  [#permalink]

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New post 08 Feb 2015, 03:15
fyi
That was a question from PowerScore CR Bible
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Re: Galanin is a protein found in the brain. In an experiment  [#permalink]

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New post 08 Feb 2017, 21:21
Doesnt the option A says that "craving" doesnt lead the rat to choose fatty food ?
I felt here the alternate opinion is eliminated. Craving doesnt lead rat to choose fatty foods but its the galanin which is responsible to choose fatty food. I didnot understand the phrase "doesnot invariably"

Please help.
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Re: Galanin is a protein found in the brain. In an experiment  [#permalink]

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New post 13 Feb 2017, 15:09
Galanin is a protein found in the brain. In an experiment, rats that consistently chose to eat fatty foods when offered a choice between lean and fatty foods were found to have significantly higher concentrations of galanin in their brains than did rats that consistently chose lean over fatty foods. These facts strongly support the conclusion that galanin causes rats to crave fatty foods.

Which one of the following, if true, most supports the argument?

a) The craving for fatty foods does not invariably rsult in a rats chosing those foods over lean foods.
b) The brains of the rats that consistently chose to eat fatty foods did not contain significantly more fat than did thebrains of rats that consustently choos elean foods.
c) The chemical components are present in both fatty and lean foods
d) The rats that preferred fatty foods had the higher concentrations of galanin in their brains before they were offered fatty foods.
e) rats that metabolize fat less efficiently than do other rats develop high concentrations of galanin in their brains.


Point A B and C does not necesarily support the argument but choice D clearly mentions that the mice already had galanin before eating fatty food and fatty food did not cause the deposition of galanin in them so Point D supports the argument. while Point E talks about metabolism which is out of scope.

So Answer is D.
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Re: Galanin is a protein found in the brain. In an experiment  [#permalink]

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New post 08 Aug 2017, 08:30
sayantanc2k wrote:
sumanainampudi wrote:
Doesnt the option A says that "craving" doesnt lead the rat to choose fatty food ?
I felt here the alternate opinion is eliminated. Craving doesnt lead rat to choose fatty foods but its the galanin which is responsible to choose fatty food. I didnot understand the phrase "doesnot invariably"

Please help.


Does not invariably = variably.

This means that it is not always the case the craving is the cause that rats choose fatty foods - i.e., there may be some other factor that results in such choice. Thus option does not eliminate an alternate cause but contrarily suggests that an alternate cause is possible.

Thus option A weakens the conclusion.


Further to this, may we say that:-
Conclusion: Protein galanin in brain causes rats to crave (remember the word crave and not choose) fatty foods.
A says that craving for fatty foods does not necessarily result in rat's choosing (and not craving) those foods over lean foods.

This way, the option A does not make any sense at all. Conclusion talks about craving but A talks about choosing. So, A can be eliminated on this ground.
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Re: Galanin is a protein found in the brain. In an experiment   [#permalink] 08 Aug 2017, 08:30
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Galanin is a protein found in the brain. In an experiment

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