Find all School-related info fast with the new School-Specific MBA Forum

It is currently 17 Sep 2014, 02:05

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.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

Neuroscientists are making progress in discovering more

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Director
Director
avatar
Joined: 05 Jan 2008
Posts: 709
Followers: 2

Kudos [?]: 100 [0], given: 0

GMAT Tests User
Neuroscientists are making progress in discovering more [#permalink] New post 14 Jun 2008, 12:42
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
Neuroscientists are making progress in discovering more about the cause of Alzheimer’s disease. Alzheimer’s disease patients suffer from dementia and sever memory loss. Autopsies performed on such patients have revealed the presence of brain lesions caused by abnormal protein deposits. Similar deposits are also found in the brains of elderly patients who do not suffer from Alzheimer’s disease. It follows that everyone who lives long enough will eventually develop Alzheimer’s disease.

Which one of the following statements, if true, most seriously undermines the conclusion that everyone who lives long enough will eventually develop Alzheimer’s disease?

(A) The lesions found in the brains of non-Alzheimer’s disease patients are far less extensive than those found in the brains of Alzheimer’s disease patients.
(B) The developing brain produces a greater number of cells than it will ever use. The extra cells are later destroyed by what biologists call “programmed cell death.”
(C) The procedure that allows scientists to discover the presence of protein deposits during an autopsy is not yet refined enough to ensure detection of the lesions in all patients.
(D) Autopsies have shown that some people lack the chemical necessary for protein deposits to cause brain lesions.
(E) Though most Alzheimer’s disease patients develop the disease when they are in their late fifties to early seventies, the frequency of patients who develop the disease in their forties is on the rise.
_________________

Persistence+Patience+Persistence+Patience=G...O...A...L

Manager
Manager
User avatar
Joined: 08 Jun 2008
Posts: 51
Followers: 0

Kudos [?]: 9 [0], given: 0

Re: CR: Neuro [#permalink] New post 14 Jun 2008, 12:49
D sounds fine to me .... whats the OA
Senior Manager
Senior Manager
avatar
Joined: 06 Jul 2007
Posts: 286
Followers: 3

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

GMAT Tests User
Re: CR: Neuro [#permalink] New post 14 Jun 2008, 12:55
prasannar wrote:
Neuroscientists are making progress in discovering more about the cause of Alzheimer’s disease. Alzheimer’s disease patients suffer from dementia and sever memory loss. Autopsies performed on such patients have revealed the presence of brain lesions caused by abnormal protein deposits. Similar deposits are also found in the brains of elderly patients who do not suffer from Alzheimer’s disease. It follows that everyone who lives long enough will eventually develop Alzheimer’s disease.

Which one of the following statements, if true, most seriously undermines the conclusion that everyone who lives long enough will eventually develop Alzheimer’s disease?

(A) The lesions found in the brains of non-Alzheimer’s disease patients are far less extensive than those found in the brains of Alzheimer’s disease patients.
(B) The developing brain produces a greater number of cells than it will ever use. The extra cells are later destroyed by what biologists call “programmed cell death.”
(C) The procedure that allows scientists to discover the presence of protein deposits during an autopsy is not yet refined enough to ensure detection of the lesions in all patients.
(D) Autopsies have shown that some people lack the chemical necessary for protein deposits to cause brain lesions.
(E) Though most Alzheimer’s disease patients develop the disease when they are in their late fifties to early seventies, the frequency of patients who develop the disease in their forties is on the rise.



It must be A. Even if lesions are found in both types of of patients, it's the extent of these lesions that causes the disease.
Senior Manager
Senior Manager
avatar
Joined: 26 Jan 2008
Posts: 267
Followers: 2

Kudos [?]: 74 [0], given: 1

GMAT Tests User
Re: CR: Neuro [#permalink] New post 14 Jun 2008, 13:15
prasannar wrote:
Neuroscientists are making progress in discovering more about the cause of Alzheimer’s disease. Alzheimer’s disease patients suffer from dementia and sever memory loss. Autopsies performed on such patients have revealed the presence of brain lesions caused by abnormal protein deposits. Similar deposits are also found in the brains of elderly patients who do not suffer from Alzheimer’s disease. It follows that everyone who lives long enough will eventually develop Alzheimer’s disease.

Which one of the following statements, if true, most seriously undermines the conclusion that everyone who lives long enough will eventually develop Alzheimer’s disease?

(A) The lesions found in the brains of non-Alzheimer’s disease patients are far less extensive than those found in the brains of Alzheimer’s disease patients. Incorrect. We're looking for a connection between protein deposits and brain lesions. This isn't it.
(B) The developing brain produces a greater number of cells than it will ever use. The extra cells are later destroyed by what biologists call “programmed cell death.” Irrelevant
(C) The procedure that allows scientists to discover the presence of protein deposits during an autopsy is not yet refined enough to ensure detection of the lesions in all patients. Irrelevant to conclusion
(D) Autopsies have shown that some people lack the chemical necessary for protein deposits to cause brain lesions. Bingo. Provides the connection between protein deposits and brain lesions, rendering the conclusion inaccurate
(E) Though most Alzheimer’s disease patients develop the disease when they are in their late fifties to early seventies, the frequency of patients who develop the disease in their forties is on the rise.Incorrect. We're looking to disprove the connection between longetivity and Alzheimer's. While potentially damaging to the conclusion, it could be due to a host of other reasons -- unhealtheir lifestyles, for instance

_________________

My GMAT debrief

Re: CR: Neuro   [#permalink] 14 Jun 2008, 13:15
    Similar topics Author Replies Last post
Similar
Topics:
Neuroscientists are making progress in discovering more mahesh004 6 02 Jun 2006, 11:01
Neuroscientists are making progress in discovering more rahulraao 4 15 Nov 2005, 15:49
Neuroscientists are making progress in discovering more rahuluec 4 10 Oct 2005, 08:41
Neuroscientists are making progress in discovering more dipaksingh 2 05 May 2005, 23:36
Neuroscientists are making progress in discovering more vprabhala 4 21 Mar 2005, 13:18
Display posts from previous: Sort by

Neuroscientists are making progress in discovering more

  Question banks Downloads My Bookmarks Reviews Important topics  


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

Powered by phpBB © phpBB Group and phpBB SEO

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®.