|
Author |
Message |
|
TAGS:
|
|
|
Manager
Joined: 27 Feb 2010
Posts: 107
Location: Denver
Followers: 1
Kudos [?]:
71
[1] , given: 14
|
The ancient Nubians inhabited an area in which typhus [#permalink]
 24 Apr 2010, 07:32
1
This post received
KUDOS
Question Stats:
75% (02:39) correct
24% (01:47) wrong based on 127 sessions
The ancient Nubians inhabited an area in which typhus occurs, yet surprisingly few of their skeletons show the usual evidence of this disease. The skeletons do show deposits of tetracycline, an antibiotic produced by a bacterium common in Nubian soil. This bacterium can flourish on the dried grain used for making two staples of the Nubian diet, beer and bread. Thus, tetracycline in their food probably explains the low incidence of typhus among ancient Nubians. Which of the following is an assumption on which the argument relies?A. Infectious diseases other than typhus to which the ancient Nubians were exposed are unaffected by tetracycline. B. Tetracycline is not rendered ineffective as an antibiotic by exposure to the processes involved in making bread and beer. C. Typhus cannot be transmitted by ingesting bread or beer contaminated with the infectious agents of this disease. D. Bread and beer were the only items in the diet of the ancient Nubians which could have contained tetracycline. E. Typhus is generally fatal.
|
|
|
|
|
|
|
Senior Manager
Joined: 24 Jul 2009
Posts: 299
Followers: 2
Kudos [?]:
51
[1] , given: 0
|
Re: Ancient Nubians inhabited an area - CR [#permalink]
24 Apr 2010, 08:50
1
This post received
KUDOS
zz0vlb wrote: The ancient Nubians inhabited an area in which typhus accurs, yet surprisingly few of their skeletons show the usual evidence of this disease. The skeletons do show deposits of tetracycline, an antibiotic produced by a bacterium common in Numbian soil. This bacterium can flourish on the dried grain used for making two staples of Nubian diet, beer and bread. Thus , tertacycline in their food propably explains the low incidence of typhus amoung ancient Numbians. Which of the following is an assumption on which the argument relies?A. Infectious diseases other than typhus to which the ancient Numbians were exposed are unaffected by tetracycline. >>> Out of scope >> Argument is talking about Typhus and tetracycline.B. Tetracycline is not rendered ineffective as an antibiotic by exposure to the process involved in making bread and beer. >>> CORRECT >>> argument talks about "less amount of typhus" due to "presence of tetracycline "C. Typhus cannot be transmitted by ingesting bread or beer contaminated with the infectious agents of this disease. >>> Even if the typhus is transmitted, this is no reason to find NO typhus on the skeleton..!!D. Bread and beer were the only items in the diet of the ancients Numbians which could have contained tetracycline. >>> Even if there were more items, there is no effect on the argument which talks about "less amount of typhus" due to "presence of tetracycline "E.Typhus is generally fatal. >>> Out of scope
|
|
|
|
|
|
SVP
Joined: 17 Feb 2010
Posts: 1568
Followers: 12
Kudos [?]:
123
[0], given: 6
|
Re: Ancient Nubians inhabited an area - CR [#permalink]
09 Sep 2010, 12:13
agree with B here.
|
|
|
|
|
|
Senior Manager
Joined: 06 Jun 2009
Posts: 335
Location: USA
WE 1: Engineering
Followers: 1
Kudos [?]:
36
[0], given: 0
|
Re: Ancient Nubians inhabited an area - CR [#permalink]
10 Sep 2010, 06:32
B for me too. Everything else seems irrelevant. The source of tetracycline is the bacterium present on dried grain and the skeleton has tetracycline, hence, the bacterium did not die during the beer/bread making process.
_________________
All things are possible to those who believe.
|
|
|
|
|
|
Senior Manager
Status: Upset about the verbal score - SC, CR and RC are going to be my friend
Joined: 30 Jun 2010
Posts: 319
Followers: 4
Kudos [?]:
14
[0], given: 6
|
Re: Ancient Nubians inhabited an area - CR [#permalink]
10 Sep 2010, 07:01
I had to read this stimulus multiple times then by poe, only B stands a chance. Quote: Thus , tertacycline in their food propably explains the low incidence of typhus amoung ancient Numbians. the above is the conclusion. only B seems to be closer.
_________________
My gmat story
MGMAT1 - 630 Q44V32
MGMAT2 - 650 Q41V38
MGMAT3 - 680 Q44V37
GMATPrep1 - 660 Q49V31
Knewton1 - 550 Q40V27
|
|
|
|
|
|
Manager
Joined: 15 Apr 2010
Posts: 173
Followers: 4
Kudos [?]:
19
[0], given: 3
|
Re: Ancient Nubians inhabited an area - CR [#permalink]
11 Sep 2010, 10:16
+1 for B.
|
|
|
|
|
|
Senior Manager
Joined: 09 Jun 2010
Posts: 456
Followers: 0
Kudos [?]:
14
[0], given: 39
|
Re: Ancient Nubians inhabited an area - CR [#permalink]
15 Jun 2011, 00:17
B is defender assumption.
in the book CRITICAL REASONING BIBLE, the most helpful part is assumption and causal relation part. Other parts of the book is not new and not effective.
|
|
|
|
|
|
VP
Status: There is always something new !!
Affiliations: PMI,QAI Global,eXampleCG
Joined: 08 May 2009
Posts: 1395
Followers: 8
Kudos [?]:
86
[0], given: 10
|
Re: Ancient Nubians inhabited an area - CR [#permalink]
15 Jun 2011, 08:31
Clean B without hassles.More so the argument does not have reasoning gap too.A defender answer choice,hence.
_________________
Visit -- http://www.sustainable-sphere.com/
Promote Green Business,Sustainable Living and Green Earth !!
|
|
|
|
|
|
Senior Manager
Joined: 20 Dec 2010
Posts: 260
Schools: UNC Duke Kellogg
Followers: 3
Kudos [?]:
19
[0], given: 4
|
Re: Ancient Nubians inhabited an area - CR [#permalink]
20 Jun 2011, 08:23
The author suggests that the antibiotic tetracycline was effective against Typhus. He also says that tetracycline is found in the dry grain used to make beer and bread (Nubian staple food).
So the assumption is --> tetracycline is not affected by the cooking / refining processes.
|
|
|
|
|
|
Senior Manager
Joined: 20 Dec 2010
Posts: 260
Schools: UNC Duke Kellogg
Followers: 3
Kudos [?]:
19
[0], given: 4
|
Re: Ancient Nubians inhabited an area - CR [#permalink]
20 Jun 2011, 08:29
If we use the negation rule...we can easily verify that B is the correct choice.
Original Choice: Tetracycline is not rendered ineffective as an antibiotic by exposure to the processes involved in making bread and beer
Modified / Negated: Tetracycline IS rendered ineffective as an antibiotic by exposure to the processes involved in making bread and beer (the not is removed)
The negated choice totally destroys the author's rationale for the low incidence of typhus. If Tetracycline is "rendered ineffective" via cooking processes --> then tetracycline present in grains is not the reason behind the low incidence of Typhus.
|
|
|
|
|
|
Manager
Joined: 16 Mar 2011
Posts: 180
Followers: 1
Kudos [?]:
10
[0], given: 13
|
Re: Ancient Nubians inhabited an area - CR [#permalink]
20 Jun 2011, 11:00
B, definately
|
|
|
|
|
|
Manager
Joined: 04 Sep 2010
Posts: 88
Followers: 1
Kudos [?]:
3
[0], given: 11
|
Re: Ancient Nubians inhabited an area - CR [#permalink]
22 Jun 2011, 03:12
b
|
|
|
|
|
|
Intern
Joined: 11 Oct 2010
Posts: 27
Followers: 0
Kudos [?]:
0
[0], given: 0
|
Re: Ancient Nubians inhabited an area - CR [#permalink]
03 Jul 2011, 20:17
B- straightforward answer
|
|
|
|
|
|
SVP
Status: 2000 posts! I don't know whether I should feel great or sad about it! LOL
Joined: 04 Oct 2009
Posts: 1746
Location: Peru
Schools: Harvard, Stanford, Wharton, MIT & HKS (Government)
WE 1: Economic research
WE 2: Banking
WE 3: Government: Foreign Trade and SMEs
Followers: 49
Kudos [?]:
150
[0], given: 108
|
Re: The ancient Nubians inhabited an area in which typhus [#permalink]
07 May 2012, 06:36
+1 B If the tetracycline is not effective when it is in beer or bread, we cannot conclude that the antibiotic helped the Nubians.
_________________
"Life’s battle doesn’t always go to stronger or faster men; but sooner or later the man who wins is the one who thinks he can."
My Integrated Reasoning Logbook / Diary: my-ir-logbook-diary-133264.html
Find out what's new at GMAT Club - latest features and updates
|
|
|
|
|
|
Manager
Joined: 12 Mar 2012
Posts: 171
Location: India
Concentration: Technology, General Management
GMAT Date: 07-23-2012
WE: Programming (Telecommunications)
Followers: 0
Kudos [?]:
26
[0], given: 4
|
Re: The ancient Nubians inhabited an area in which typhus [#permalink]
22 May 2012, 11:50
B clearly explains that the process of making staple food doesn't make the antibiotic ineffective. Hence B it is!
_________________
FOCUS..this is all I need!
Ku-Do!
|
|
|
|
|
|
|
Re: The ancient Nubians inhabited an area in which typhus
[#permalink]
22 May 2012, 11:50
|
|
|
|
|
|
|
|
|
|
Moderators:
tuanquang269, RaviChandra, Vercules, Legendaddy, noboru, Marcab, metallicafan, rajeevrks27, willigetmylifeback, mikemcgarry, souvik101990, doe007, MacFauz, PTK, carcass, kissthegmat, Narenn
|
close
