Animals with a certain behavioral disorder have unusually : GMAT Critical Reasoning (CR)
Check GMAT Club Decision Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack

 It is currently 19 Jan 2017, 08:10

### 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

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

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# Animals with a certain behavioral disorder have unusually

Author Message
TAGS:

### Hide Tags

Senior Manager
Joined: 16 Sep 2006
Posts: 406
Followers: 1

Kudos [?]: 72 [0], given: 0

Animals with a certain behavioral disorder have unusually [#permalink]

### Show Tags

16 Nov 2006, 03:45
00:00

Difficulty:

(N/A)

Question Stats:

82% (01:48) correct 18% (01:40) wrong based on 32 sessions

### HideShow timer Statistics

5. Animals with a certain behavioral disorder have unusually high level of aluminum in their brain tissue. Since a silicon-based compound binds to aluminum and prevents it from affecting the brain tissue. Animals can be cured of the disorder by being treated with the compound.
The argument is based on which one of the following assumptions?
(A) Animals with the disorder have unusually high but invariable levels of aluminum in their brain tissue.
(B) Aluminum is the cause of the disorder rather than merely an effect of it.
(C) Introducing the compound into the brain tissue has no side effects.
(D) The amount of the compound needed to neutralize the aluminum in an animalâ€™s brain tissue varies depending upon the species.
(E) Aluminum is never present in normal brain tissue.
If you have any questions
New!
VP
Joined: 21 Aug 2006
Posts: 1025
Followers: 1

Kudos [?]: 31 [0], given: 0

Re: CR on aluminum in their brain tissue! [#permalink]

### Show Tags

16 Nov 2006, 03:57
jyotsnasarabu wrote:
5. Animals with a certain behavioral disorder have unusually high level of aluminum in their brain tissue. Since a silicon-based compound binds to aluminum and prevents it from affecting the brain tissue. Animals can be cured of the disorder by being treated with the compound.
The argument is based on which one of the following assumptions?
(A) Animals with the disorder have unusually high but invariable levels of aluminum in their brain tissue.
(B) Aluminum is the cause of the disorder rather than merely an effect of it.

A trap. Irrespective of whether Aluminium is the cause of effect, we dont want that to affect the brain tissue. Hence, we are not concerned about Aluminium as a cause or effect when we are deciding about silicon usage.

(C) Introducing the compound into the brain tissue has no side effects.

My answer. If introducing silicon causes some other side effects, its introduction can't be justified.

(D) The amount of the compound needed to neutralize the aluminum in an animalâ€™s brain tissue varies depending upon the species.
(E) Aluminum is never present in normal brain tissue.

_________________

The path is long, but self-surrender makes it short;
the way is difficult, but perfect trust makes it easy.

Last edited by ak_idc on 16 Nov 2006, 05:42, edited 2 times in total.
Senior Manager
Joined: 16 Sep 2006
Posts: 406
Followers: 1

Kudos [?]: 72 [0], given: 0

### Show Tags

16 Nov 2006, 05:22
OA is B..................M baffled myself..............inspite of readin the argumnet so many times....................
VP
Joined: 21 Aug 2006
Posts: 1025
Followers: 1

Kudos [?]: 31 [0], given: 0

Re: CR on aluminum in their brain tissue! [#permalink]

### Show Tags

16 Nov 2006, 05:42
ak_idc wrote:
jyotsnasarabu wrote:
5. Animals with a certain behavioral disorder have unusually high level of aluminum in their brain tissue. Since a silicon-based compound binds to aluminum and prevents it from affecting the brain tissue. Animals can be cured of the disorder by being treated with the compound.
The argument is based on which one of the following assumptions?
(A) Animals with the disorder have unusually high but invariable levels of aluminum in their brain tissue.
(B) Aluminum is the cause of the disorder rather than merely an effect of it.

A trap. Irrespective of whether Aluminium is the cause of effect, we dont want that to affect the brain tissue. Hence, we are not concerned about Aluminium as a cause or effect when we are deciding about silicon usage.

(C) Introducing the compound into the brain tissue has no side effects.

My answer. If introducing silicon causes some other side effects, its introduction can't be justified.

(D) The amount of the compound needed to neutralize the aluminum in an animalâ€™s brain tissue varies depending upon the species.
(E) Aluminum is never present in normal brain tissue.

Hey, now I understand. I did not pay attention to the word "silicon based compound".

That means the compound is a derivative of silicon. Hence there is no scope of silicon causing side effects since, that is the cure. They must have thought about the side effects before introducing that as a medicine. Hence, side effect is out side the scope of the argument.

As they are not using silicon, but silicon based compound we can take B as the answer. The argument says "prevents it from affecting the brain tissue". That means Aluminum is affecting the brain tissue, and there is no point in stopping it from affecting brain tissue unless Aluminum is affecting behavior subsequently. Aluminum might cause some other damage by affecting brain tissue (make them rust and make the individual unfit for gmat ) , but that is not covered in the argument, hence we can ignore that possibility...I guess.
_________________

The path is long, but self-surrender makes it short;
the way is difficult, but perfect trust makes it easy.

Last edited by ak_idc on 16 Nov 2006, 05:49, edited 1 time in total.
Senior Manager
Joined: 16 Sep 2006
Posts: 406
Followers: 1

Kudos [?]: 72 [0], given: 0

### Show Tags

16 Nov 2006, 05:48
gud notes.........n thanx for that bit of humor...............
Director
Joined: 24 Aug 2006
Posts: 751
Location: Dallas, Texas
Followers: 6

Kudos [?]: 145 [0], given: 0

### Show Tags

16 Nov 2006, 20:45
I was about to type a long explanation on causal reasoning errors but hey, who cares ... I'll pick B !
_________________

"Education is what remains when one has forgotten everything he learned in school."

VP
Joined: 21 Aug 2006
Posts: 1025
Followers: 1

Kudos [?]: 31 [0], given: 0

### Show Tags

17 Nov 2006, 00:41
Swagatalakshmi wrote:
I was about to type a long explanation on causal reasoning errors but hey, who cares ... I'll pick B !

we do..please share ur thoughts on causal reasoning...
_________________

The path is long, but self-surrender makes it short;
the way is difficult, but perfect trust makes it easy.

Manager
Joined: 22 May 2006
Posts: 71
Followers: 1

Kudos [?]: 0 [0], given: 0

### Show Tags

17 Nov 2006, 01:29
got b straight away
Verbal Forum Moderator
Joined: 15 Jun 2012
Posts: 1153
Location: United States
Followers: 259

Kudos [?]: 2867 [0], given: 123

Re: Animals with a certain behavioral disorder have unusually [#permalink]

### Show Tags

18 Apr 2013, 22:50
Cause and effect problem.
If aluminum is the effect of the disorder, a silicon-based compound cannot cure animals.
B is correct
_________________

Please +1 KUDO if my post helps. Thank you.

"Designing cars consumes you; it has a hold on your spirit which is incredibly powerful. It's not something you can do part time, you have do it with all your heart and soul or you're going to get it wrong."

Chris Bangle - Former BMW Chief of Design.

Manager
Joined: 06 Jul 2011
Posts: 132
Followers: 0

Kudos [?]: 71 [0], given: 240

Re: Animals with a certain behavioral disorder have unusually [#permalink]

### Show Tags

12 Jul 2015, 07:37
Why is (E) Aluminum is never present in normal brain tissue. wrong answer for this question?
Re: Animals with a certain behavioral disorder have unusually   [#permalink] 12 Jul 2015, 07:37
Similar topics Replies Last post
Similar
Topics:
4 A child's conception of whether certain behavior 7 27 Oct 2013, 22:15
4 A behavioral psychologist interested in animal behavior 9 21 Oct 2012, 14:02
1 Researcher: People with certain personality disorders have 4 04 Jan 2010, 10:33
13 People with a certain eye disorder are virtually unable to 10 02 Feb 2008, 08:21
Farm animals have certain behavioral tendencies that result 5 23 Mar 2007, 09:57
Display posts from previous: Sort by