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Certain messenger molecules fight damage to the lungs from n

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Certain messenger molecules fight damage to the lungs from n [#permalink] New post 16 Jan 2014, 23:13
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  35% (medium)

Question Stats:

59% (02:16) correct 41% (01:52) wrong based on 56 sessions
Certain messenger molecules fight damage to the lungs from noxious air by telling the muscle cells encircling the lungs' airways to contract.This partially seals off the lungs.An asthma attack occurs when the messenger molecules are activated unnecessarily, in response to harmless things like pollen or household dust.
Which of the following, if true, points to the most serious flaw of a plan to develop a medication that would prevent asthma attacks by blocking receipt of any messages sent by the messenger molecules referred to above?

A.Researchers do not yet know how the body produces the messenger molecules that trigger asthma attacks.
B.Researchers do not yet know what makes one person's messenger molecules more easily activated than another's.
C.Such a medication would not become available for several years, because of long lead times in both development and manufacture.
D.Such a medication would be unable to distinghuish between messages triggered by pollen and household dust and messages triggered by noxious air.
E.Such a medication would be a preventative only and would be unable to alleviate an asathma attack once it had started.
[Reveal] Spoiler: OA

Last edited by dk09 on 22 Jan 2014, 06:36, edited 1 time in total.
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Re: CR doubt, confusion between two choices [#permalink] New post 17 Jan 2014, 01:57
Please modify the OA. OA is D.

Here is the link that will help you understand this CR better.

certain-messenger-molecules-fight-damage-to-the-lungs-from-161735.html
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Re: CR doubt, confusion between two choices [#permalink] New post 18 Jan 2014, 06:18
It seems like D to me as well. Without knowing the source of activation of messenger molecules the medication can block messages in case of noxious air causing damage to lungs.
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Re: Certain messenger molecules fight damage to the lungs from n [#permalink] New post 18 Jan 2014, 21:32
THE PLAN CAN ONLY FAIL IF ----THOUGH IT DOES STOP ASTHMATIC ATTACK, BUT INHIBITS THE FUNCTIONING OF THE NOXIOUS AIR COUNTER MECHANISM OF THE HUMAN BODY....
SURE WE HAVE ELIMINATED THE DRAW BACK --- BUT AT THE EXPENSE OF ELIMINATING THE VERY EXISTENCE OF THE - COUNTER NOXIOUS AIR POISONING MECHANISM ITSELF....... ANSWER "D"................
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Re: Certain messenger molecules fight damage to the lungs from n [#permalink] New post 22 Jan 2014, 06:37
Can anyone please explain why it cannot be B?
Re: Certain messenger molecules fight damage to the lungs from n   [#permalink] 22 Jan 2014, 06:37
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Certain messenger molecules fight damage to the lungs from n

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