Events & Promotions
|
|
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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Nov 1811:00 AM PST
-12:00 PM PST
Join us in a live GMAT practice session and solve 30 challenging GMAT questions with other test takers in timed conditions, covering GMAT Quant, Data Sufficiency, Data Insights, Reading Comprehension, and Critical Reasoning questions.
Nov 2211:00 AM IST
-01:00 PM IST
Do RC/MSR passages scare you? e-GMAT is conducting a masterclass to help you learn – Learn effective reading strategies Tackle difficult RC & MSR with confidence Excel in timed test environment- Nov 23
11:00 AM IST
-01:00 PM IST
Attend this free GMAT Algebra Webinar and learn how to master the most challenging Inequalities and Absolute Value problems with ease. 
Nov 2510:00 AM EST
-11:00 AM EST
Prefer video-based learning? The Target Test Prep OnDemand course is a one-of-a-kind video masterclass featuring 400 hours of lecture-style teaching by Scott Woodbury-Stewart, founder of Target Test Prep and one of the most accomplished GMAT instructors.
17 Jul 2017, 09:09
Kudos
Bookmarks
C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
35%
(medium)
Question Stats:
75% (02:06) correct
25%
(02:14)
wrong
based on 860
sessions
History
Date
Time
Result
Not Attempted Yet
One test to determine whether a person has been infected with tuberculosis consists of injecting the person with proteins extracted from the tuberculosis bacterium. Once a person has been infected by a bacterium, the person’s immune system subsequently recognizes certain proteins present in that bacterium and attacks the bacterium. This recognition also takes place in the test and results in a skin irritation at the injection site. Hence the physicians who designed the test reasoned that anyone who reacts in this manner to an injection with the tuberculosis proteins has been infected with tuberculosis.
Which one of the following is an assumption on which the physicians’ reasoning depends?
(A) All of the proteins present in disease-causing bacteria can be recognized by the body’s immune system.
(B) Localized skin irritations are a characteristic symptom of tuberculosis in most people.
(C) The ability of the proteins present in the tuberculosis bacterium to trigger the skin irritation is exclusive to that bacterium.
(D) Some people who have been injected with proteins extracted from the tuberculosis bacterium will contract tuberculosis as a result of the injection.
(E) The body’s immune system cannot recognize infectious bacteria unless there are sufficient quantities of the bacteria to cause overt symptoms of disease.
Which one of the following is an assumption on which the physicians’ reasoning depends?
(A) All of the proteins present in disease-causing bacteria can be recognized by the body’s immune system.
(B) Localized skin irritations are a characteristic symptom of tuberculosis in most people.
(C) The ability of the proteins present in the tuberculosis bacterium to trigger the skin irritation is exclusive to that bacterium.
(D) Some people who have been injected with proteins extracted from the tuberculosis bacterium will contract tuberculosis as a result of the injection.
(E) The body’s immune system cannot recognize infectious bacteria unless there are sufficient quantities of the bacteria to cause overt symptoms of disease.
18 Jul 2017, 09:27
Kudos
Bookmarks
nk05
We're trying to find an assumption that backs up the following claim:
If a patient is injected with the tuberculosis protein AND that patient experiences a skin irritation at the injection site THEN they must have tuberculosis.
(A) All of the proteins present in disease-causing bacteria can be recognized by the body’s immune system. No mention of the skin irritation
(B) Localized skin irritations are a characteristic symptom of tuberculosis in most people. Vague mention of skin irritations and its effect on most people. This choice does not mention the tuberculosis protein being the root of the irritation but could be an irritation caused by anything.
(C) The ability of the proteins present in the tuberculosis bacterium to trigger the skin irritation is exclusive to that bacterium. Supports our If-Then statement that the irritation is caused exclusively by the injected tuberculosis protein
(D) Some people who have been injected with proteins extracted from the tuberculosis bacterium will contract tuberculosis as a result of the injection. Out of scope. There's no mention that the injection causes tuberculosis.
(E) The body’s immune system cannot recognize infectious bacteria unless there are sufficient quantities of the bacteria to cause overt symptoms of disease. Out of scope. Question is looking for an assumption around the protein injection and a skin irritation.
General Discussion
17 Jul 2017, 09:48
Kudos
Bookmarks
Akela
HI..
lets see the reasoning of PARA
A person affected from tuberculosis if injected with proteins extracted from the BACTERIUM will result in skin irritations at the injected location
what could be the flaw in reasoning - No other event can lead to this type of irritation..
so this FLAW otherwise could be the VERY assumption the author has taken
C correctly rephrases the flaw and gives the assumption. If we negate it, the reasoning will fail as shown by flaw..
C
