GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 21 Nov 2018, 06:06

LIVE NOW!

LBS is Calling R1 Admits - Join Chat Room to Catch the Latest Action


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 in November
PrevNext
SuMoTuWeThFrSa
28293031123
45678910
11121314151617
18192021222324
2526272829301
Open Detailed Calendar
  • All GMAT Club Tests are Free and open on November 22nd in celebration of Thanksgiving Day!

     November 22, 2018

     November 22, 2018

     10:00 PM PST

     11:00 PM PST

    Mark your calendars - All GMAT Club Tests are free and open November 22nd to celebrate Thanksgiving Day! Access will be available from 0:01 AM to 11:59 PM, Pacific Time (USA)
  • Key Strategies to Master GMAT SC

     November 24, 2018

     November 24, 2018

     07:00 AM PST

     09:00 AM PST

    Attend this webinar to learn how to leverage Meaning and Logic to solve the most challenging Sentence Correction Questions.

A group of scientists studying calcium metabolism in

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

Hide Tags

SVP
SVP
avatar
Joined: 04 May 2006
Posts: 1677
Schools: CBS, Kellogg
Premium Member
A group of scientists studying calcium metabolism in  [#permalink]

Show Tags

New post Updated on: 01 Jun 2014, 11:13
2
7
00:00
A
B
C
D
E

Difficulty:

  75% (hard)

Question Stats:

60% (02:00) correct 40% (01:58) wrong based on 279 sessions

HideShow timer Statistics

A group of scientists studying calcium metabolism in laboratory rats discovered that removing the rats’ parathyroid glands resulted in the rats’ having substantially lower than normal levels of calcium in their blood. This discovery led the scientists to hypothesize that the function of the parathyroid gland is to regulate the level of calcium in the blood by raising that level when it falls below the normal range. In a further experiment, the scientists removed not only the parathyroid gland but also the adrenal gland from rats. They made the surprising discovery that the level of calcium in the rats’ blood decreased much less sharply than when the parathyroid gland alone was removed.
Which one of the following, if true, explains the surprising discovery in a way most consistent with the scientists’ hypothesis?
(A) The adrenal gland acts to lower the level of calcium in the blood.
(B) The adrenal gland and the parathyroid gland play the same role in regulating calcium blood levels.
(C) The absence of a parathyroid gland causes the adrenal gland to increase the level of calcium in the blood.
(D) If the adrenal gland, and no other gland, of a rat were removed, the rat’s calcium level would remain stable.
(E) The only function of the parathyroid gland is to regulate the level of calcium in the blood.

_________________

GMAT Club Premium Membership - big benefits and savings


Originally posted by sondenso on 18 May 2009, 23:09.
Last edited by ankurgupta03 on 01 Jun 2014, 11:13, edited 1 time in total.
added the OA
Most Helpful Community Reply
Manager
Manager
avatar
Joined: 30 Mar 2009
Posts: 220
Re: Calcium metabolism  [#permalink]

Show Tags

New post 19 May 2009, 01:27
4
2
Clearly A
remove Parathyroid -->decrease level of calcium
both remove Parathyroid & Adrenal --> decrease but less than before
--> remove Adrenal -->increase level of calcium
--> not remove Adrenal (remains in rat's body) --> decrease level of calcium


A group of scientists studying calcium metabolism in laboratory rats discovered that removing the rats’ parathyroid glands resulted in the rats’ having substantially lower than normal levels of calcium in their blood. This discovery led the scientists to hypothesize that the function of the parathyroid gland is to regulate the level of calcium in the blood by raising that level when it falls below the normal range. In a further experiment, the scientists removed not only the parathyroid gland but also the adrenal gland from rats. They made the surprising discovery that the level of calcium in the rats’ blood decreased much less sharply than when the parathyroid gland alone was removed.
Which one of the following, if true, explains the surprising discovery in a way most consistent with the scientists’ hypothesis?
(A) The adrenal gland acts to lower the level of calcium in the blood --> best
(B) The adrenal gland and the parathyroid gland play the same role in regulating calcium blood levels -->no, they play opposite roles
(C) The absence of a parathyroid gland causes the adrenal gland to increase the level of calcium in the blood -->counter
(D) If the adrenal gland, and no other gland, of a rat were removed, the rat’s calcium level would remain stable -->of course not
(E) The only function of the parathyroid gland is to regulate the level of calcium in the blood -->this is impressive, however, only seems too strong, and this is not the surprising discovery of the scientist about rats
General Discussion
VP
VP
avatar
Joined: 17 Jun 2008
Posts: 1433
Re: Calcium metabolism  [#permalink]

Show Tags

New post 19 May 2009, 01:19
A and D. do not support the surprising discovery.
C. does not support initial discovery.
E. neutral to the surprising discovery.

Hence, B should be the answer.
Senior Manager
Senior Manager
User avatar
Joined: 15 Jan 2008
Posts: 250
Re: Calcium metabolism  [#permalink]

Show Tags

New post 19 May 2009, 03:17
i too agree with A as the answer..
Manager
Manager
avatar
Joined: 24 Feb 2007
Posts: 198
Location: nj
Re: Calcium metabolism  [#permalink]

Show Tags

New post 20 May 2009, 13:37
imo , C

A ---> too general
B --> if they play same role the level should have dropped even more quickly
Manager
Manager
avatar
Joined: 10 May 2009
Posts: 57
Re: Calcium metabolism  [#permalink]

Show Tags

New post 21 May 2009, 05:03
Excellent explanation. It took me lot of time to understand why it's A!

Minheequang wrote:
Clearly A
remove Parathyroid -->decrease level of calcium
both remove Parathyroid & Adrenal --> decrease but less than before
--> remove Adrenal -->increase level of calcium
--> not remove Adrenal (remains in rat's body) --> decrease level of calcium


A group of scientists studying calcium metabolism in laboratory rats discovered that removing the rats’ parathyroid glands resulted in the rats’ having substantially lower than normal levels of calcium in their blood. This discovery led the scientists to hypothesize that the function of the parathyroid gland is to regulate the level of calcium in the blood by raising that level when it falls below the normal range. In a further experiment, the scientists removed not only the parathyroid gland but also the adrenal gland from rats. They made the surprising discovery that the level of calcium in the rats’ blood decreased much less sharply than when the parathyroid gland alone was removed.
Which one of the following, if true, explains the surprising discovery in a way most consistent with the scientists’ hypothesis?
(A) The adrenal gland acts to lower the level of calcium in the blood --> best
(B) The adrenal gland and the parathyroid gland play the same role in regulating calcium blood levels -->no, they play opposite roles
(C) The absence of a parathyroid gland causes the adrenal gland to increase the level of calcium in the blood -->counter
(D) If the adrenal gland, and no other gland, of a rat were removed, the rat’s calcium level would remain stable -->of course not
(E) The only function of the parathyroid gland is to regulate the level of calcium in the blood -->this is impressive, however, only seems too strong, and this is not the surprising discovery of the scientist about rats
Manager
Manager
avatar
Joined: 24 Feb 2007
Posts: 198
Location: nj
Re: Calcium metabolism  [#permalink]

Show Tags

New post 22 May 2009, 05:55
I took a second look and i understand now why its A. It was a good question though. +1 for the poster and +1 for answerer.
Manager
Manager
User avatar
Status: what we want to do, do it as soon as possible
Joined: 24 May 2010
Posts: 83
Location: Vietnam
WE 1: 5.0
Re: Calcium metabolism  [#permalink]

Show Tags

New post 04 Aug 2011, 23:40
Minheequang wrote:
Clearly A
remove Parathyroid -->decrease level of calcium
both remove Parathyroid & Adrenal --> decrease but less than before
--> remove Adrenal -->increase level of calcium
--> not remove Adrenal (remains in rat's body) --> decrease level of calcium


A group of scientists studying calcium metabolism in laboratory rats discovered that removing the rats’ parathyroid glands resulted in the rats’ having substantially lower than normal levels of calcium in their blood. This discovery led the scientists to hypothesize that the function of the parathyroid gland is to regulate the level of calcium in the blood by raising that level when it falls below the normal range. In a further experiment, the scientists removed not only the parathyroid gland but also the adrenal gland from rats. They made the surprising discovery that the level of calcium in the rats’ blood decreased much less sharply than when the parathyroid gland alone was removed.
Which one of the following, if true, explains the surprising discovery in a way most consistent with the scientists’ hypothesis?
(A) The adrenal gland acts to lower the level of calcium in the blood --> best
(B) The adrenal gland and the parathyroid gland play the same role in regulating calcium blood levels -->no, they play opposite roles
(C) The absence of a parathyroid gland causes the adrenal gland to increase the level of calcium in the blood -->counter
(D) If the adrenal gland, and no other gland, of a rat were removed, the rat’s calcium level would remain stable -->of course not
(E) The only function of the parathyroid gland is to regulate the level of calcium in the blood -->this is impressive, however, only seems too strong, and this is not the surprising discovery of the scientist about rats

decreased much less sharply = less decrease. You're awesome. +1
_________________

Consider giving me kudos if you find my explanations helpful so i can learn how to express ideas to people more understandable.

Manager
Manager
avatar
Joined: 17 Jul 2013
Posts: 82
Premium Member
Re: A group of scientists studying calcium metabolism in  [#permalink]

Show Tags

New post 01 Jun 2014, 02:59
We can take this question as cause and effect question :

removal of Parathyroid --> level of calcium decreases (either bcoz of absence of parathyroid or something else leads to the decrease)
since , its given parathyroid controls the calcium level that means something else decreasing the ca level.
both remove Parathyroid & Adrenal --> decrease in calcium gets slower ---> It means Adrenal was responsible for the decrease in the ca levels.
SVP
SVP
avatar
P
Joined: 12 Dec 2016
Posts: 1674
Location: United States
GMAT 1: 700 Q49 V33
GPA: 3.64
GMAT ToolKit User Premium Member
Re: A group of scientists studying calcium metabolism in  [#permalink]

Show Tags

New post 20 Dec 2017, 12:01
this is a LSAT question, and the passage is quite long.
Nevertheless, the pattern in this question is similar to that of gmat questions.
B is a trap b/c of "same role". C,D,E are too extreme.
Senior Manager
Senior Manager
avatar
P
Joined: 26 Jun 2017
Posts: 371
Location: Russian Federation
Concentration: General Management, Strategy
WE: Information Technology (Other)
Re: A group of scientists studying calcium metabolism in  [#permalink]

Show Tags

New post 28 Oct 2018, 18:35
A group of scientists studying calcium metabolism in laboratory rats discovered that removing the rats’ parathyroid glands resulted in the rats’ having substantially lower than normal levels of calcium in their blood. This discovery led the scientists to hypothesize that the function of the parathyroid gland is to regulate the level of calcium in the blood by raising that level when it falls below the normal range. In a further experiment, the scientists removed not only the parathyroid gland but also the adrenal gland from rats. They made the surprising discovery that the level of calcium in the rats’ blood decreased much less sharply than when the parathyroid gland alone was removed.
Which one of the following, if true, explains the surprising discovery in a way most consistent with the scientists’ hypothesis?
(A) The adrenal gland acts to lower the level of calcium in the blood.
(B) The adrenal gland and the parathyroid gland play the same role in regulating calcium blood levels.
(C) The absence of a parathyroid gland causes the adrenal gland to increase the level of calcium in the blood.
(D) If the adrenal gland, and no other gland, of a rat were removed, the rat’s calcium level would remain stable.
(E) The only function of the parathyroid gland is to regulate the level of calcium in the blood.

I do not know really how to choose here something that is not A :)
GMAT Club Bot
Re: A group of scientists studying calcium metabolism in &nbs [#permalink] 28 Oct 2018, 18:35
Display posts from previous: Sort by

A group of scientists studying calcium metabolism in

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


Copyright

GMAT Club MBA Forum Home| About| Terms and Conditions and Privacy Policy| 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®.