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Though sucking zinc lozenges has been promoted as treatment

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Though sucking zinc lozenges has been promoted as treatment [#permalink] New post 27 Apr 2010, 07:14
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Though sucking zinc lozenges has been promoted as treatment for the common cold, research has revealed no consistant effect. Recently,however, a zinc gel applied nasally has been shown
to greatly reduce the duration of colds. Since the gel contains zinc in the same form and concentration as the lozenges, the greater the effectiveness of the gel must be due to the fact that cold virus tend to concentrate in the nose, not the mouth.

Which of the following, if true , most sesiously weakens the argument?

A. Expiremental subjects who used the zinc gel not only had colds of shorter duration but also had less sever symptoms than did those who used a gel that did not contain zinc.
B. The mechanism by which zinc effects the viruses that caused the common cold has not been conclusively established.
C. to make them palatable, zinc lozenges generally contains other ingredients, such as citric acid,, that can interfer with the chemical activity of zinc.
D. no Zinc based remedy can have any effect unless it is taken or applied within 48 hrs of the onset of cold symptoms.
E. Drug company researchers experimenting with nasal spray beased on zinc have found that it has much the same effect on colds as the gel does.


[Reveal] Spoiler:
C



Please, I need explaination whether A or E weakens the argument, if not why??
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Re: zinc lozenges treatment for the common cold [#permalink] New post 27 Apr 2010, 07:25
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IMO C.

Premise 1: Sucking the zinc lozenges has been proved useful treatment but research refutes this claim.

Premise 2: Since the gel contains zinc in the same form and concentration as the lozenges.

Conclusion: Cold virus is in nose, not in mouth.

We have to find that it is not because of virus in nose rather some other factor which is making zinc lozenges less effective for showing consistant effects. Only C survives the test.

zz0vlb wrote:
Though sucking zinc lozenges has been promoted as treatment for the common cold, research has revealed no consistant effect. Recently,however, a zinc gel applied nasally has been shown
to greatly reduce the duration of colds. Since the gel contains zinc in the same form and concentration as the lozenges, the greater the effectiveness of the gel must be due to the fact that cold virus tend to concentrate in the nose, not the mouth.

Which of the following, if true , most sesiously weakens the argument?

A. Expiremental subjects who used the zinc gel not only had colds of shorter duration but also had less sever symptoms than did those who used a gel that did not contain zinc.
B. The mechanism by which zinc effects the viruses that caused the common cold has not been conclusively established.
C. to make them palatable, zinc lozenges generally contains other ingredients, such as citric acid,, that can interfer with the chemical activity of zinc.
D. no Zinc based remedy can have any effect unless it is taken or applied within 48 hrs of the onset of cold symptoms.
E. Drug company researchers experimenting with nasal spray beased on zinc have found that it has much the same effect on colds as the gel does.


[Reveal] Spoiler:
C



Please, I need explaination whether A or E weakens the argument, if not why??

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Re: zinc lozenges treatment for the common cold [#permalink] New post 27 Apr 2010, 07:30
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A. Expiremental subjects who used the zinc gel not only had colds of shorter duration but also had less sever symptoms than did those who used a gel that did not contain zinc. [We don't have info on other type of gel. We need to compare the results of zinc based gel and lozenges. Out of scope choice. Incorrect]

E. Drug company researchers experimenting with nasal spray beased on zinc have found that it has much the same effect on colds as the gel does. [We don't have info on other type of nasal sprays. This option is just to mislead us. Out of scope choice. Incorrect]
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Re: zinc lozenges treatment for the common cold [#permalink] New post 27 Apr 2010, 09:15
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zz0vlb wrote:
Though sucking zinc lozenges has been promoted as treatment for the common cold, research has revealed no consistant effect. Recently,however, a zinc gel applied nasally has been shown
to greatly reduce the duration of colds. Since the gel contains zinc in the same form and concentration as the lozenges, the greater the effectiveness of the gel must be due to the fact that cold virus tend to concentrate in the nose, not the mouth.

Which of the following, if true , most sesiously weakens the argument?

A. Expiremental subjects who used the zinc gel not only had colds of shorter duration but also had less sever symptoms than did those who used a gel that did not contain zinc.
B. The mechanism by which zinc effects the viruses that caused the common cold has not been conclusively established.
C. to make them palatable, zinc lozenges generally contains other ingredients, such as citric acid,, that can interfer with the chemical activity of zinc.
D. no Zinc based remedy can have any effect unless it is taken or applied within 48 hrs of the onset of cold symptoms.
E. Drug company researchers experimenting with nasal spray beased on zinc have found that it has much the same effect on colds as the gel does.


[Reveal] Spoiler:
C


Please, I need explaination whether A or E weakens the argument, if not why??



wats the question source? I too picked 'A'. Argument contradict lozenges effectiveness to nasal zinc gel which reduces duration of cold, its effectiveness is due to virus concentrated in nose.
zinc gel effectiveness could be weaken by subject experiment already had cold of shorter duration, hence the gel has no effect evn applied to nose.

Not sure how 'C' weakens this zinc gel's effectiveness, it hurts lozenges effectiveness. does anyone have a strong reason??
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Re: zinc lozenges treatment for the common cold [#permalink] New post 27 Apr 2010, 12:58
can someone provide a detailed explanation on how (C) is correct and (A) is incorrect.
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Re: zinc lozenges treatment for the common cold [#permalink] New post 29 Apr 2010, 04:26
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A is incorrect because IT DOENSOT weaken the arg
C simply provides an alternate explanation for the occurence
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Re: zinc lozenges treatment for the common cold [#permalink] New post 30 Apr 2010, 11:50
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Hi seekmba,

A. Expiremental subjects who used the zinc gel not only had colds of shorter duration but also had less sever symptoms than did those who used a gel that did not contain zinc. - Here, the stmt compares the zinc gel with another zinc gel and not the zinc lozenges. The first part of the stmt does allure you into selecting this option but the latter part clearly deviates.

C. to make them palatable, zinc lozenges generally contains other ingredients, such as citric acid,, that can interfer with the chemical activity of zinc - here, it clearly specifies the ineffectiveness of zinc in the lozenges against the zinc in the and thus weakens the conclusion

Hope that helps,
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Re: zinc lozenges treatment for the common cold [#permalink] New post 30 Apr 2010, 22:46
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nilesh376 wrote:
wats the question source? I too picked 'A'. Argument contradict lozenges effectiveness to nasal zinc gel which reduces duration of cold, its effectiveness is due to virus concentrated in nose.
zinc gel effectiveness could be weaken by subject experiment already had cold of shorter duration, hence the gel has no effect evn applied to nose.

Not sure how 'C' weakens this zinc gel's effectiveness, it hurts lozenges effectiveness. does anyone have a strong reason??


The argument is not that zinc is effective or that one is more effective than the other. The argument is that the gel is more effective than the lozenges because the cold virus is more in the nose than the mouth.

"the greater the effectiveness of the gel must be due to the fact that cold virus tend to concentrate in the nose, not the mouth."

C is the best answer because it gives a different possible reason why the gel is more effective. It's because they add stuff that interfers the the chemical activity of the zinc.

I don't understand how "A" could be correct.
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Re: zinc lozenges treatment for the common cold [#permalink] New post 16 Dec 2010, 16:08
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Very difficult to understand exactly why c is correct.
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Re: zinc lozenges treatment for the common cold [#permalink] New post 16 Dec 2010, 20:05
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Conclusion
Cause: cold virus tend to concentrate in the nose

Effect: gel is more effective

Answer choice (C) weaken this conclusion by suggesting an alternate cause: logzenges is less effective against cold virus

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Re: zinc lozenges treatment for the common cold [#permalink] New post 18 Dec 2010, 09:48
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+1 C
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Re: zinc lozenges treatment for the common cold [#permalink] New post 19 Dec 2010, 03:33
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spyguy wrote:
Very difficult to understand exactly why c is correct.

IMO C is correct.

The conclusion that effectiveness of gel is because it is directly applied at nose, is weakend by the statement, that in "zinc lozenges" there are some substances along with zinc which can reduce the affect zinc would have.
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Re: zinc lozenges treatment for the common cold [#permalink] New post 25 Dec 2010, 08:33
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zz0vlb wrote:
Though sucking zinc lozenges has been promoted as treatment for the common cold, research has revealed no consistant effect. Recently,however, a zinc gel applied nasally has been shown
to greatly reduce the duration of colds. Since the gel contains zinc in the same form and concentration as the lozenges, the greater the effectiveness of the gel must be due to the fact that cold virus tend to concentrate in the nose, not the mouth.

Which of the following, if true , most sesiously weakens the argument?

A. Expiremental subjects who used the zinc gel not only had colds of shorter duration but also had less sever symptoms than did those who used a gel that did not contain zinc.
B. The mechanism by which zinc effects the viruses that caused the common cold has not been conclusively established.
C. to make them palatable, zinc lozenges generally contains other ingredients, such as citric acid,, that can interfer with the chemical activity of zinc.
D. no Zinc based remedy can have any effect unless it is taken or applied within 48 hrs of the onset of cold symptoms.
E. Drug company researchers experimenting with nasal spray beased on zinc have found that it has much the same effect on colds as the gel does.


[Reveal] Spoiler:
C



Please, I need explaination whether A or E weakens the argument, if not why??



IMO C !

C is my choice because it gives another reason to show why Zinc losenges is ineffective.

A strengthens the argument by showing that zinc gel was effective.
E strengthens the conclusion by showing that nasal treatment is superior to ingestion through mouth.

Hope this clarified your doubt. Feel free to PM me if not understood.
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Re: zinc lozenges treatment for the common cold [#permalink] New post 28 Dec 2010, 11:05
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Hi all, here's an answer to this tricky question from one of our CR experts at Knewton, Jonathan Bethune. I hope it's helpful!

This is a very interesting question. The difficulty stems from the fact that the correct answer does not appear to have any direct bearing on the argument.

Start by eliminating the obviously wrong answer choices. Choice A adds details that do not undermine anything in the argument. Choice B is too weak – we don’t really need to know the mechanism by which zinc effects viruses in order to know that it helps beat the cold. Choice D is a random detail. Choice E strengthens the argument because it shows that other zinc-based nasal treatments work just as well as the gel.

Even if you rule out all of the other answer choices, how can we deduce that C is correct? The key here is to keep in mind what the specific argument is: Zinc gel works better than zinc lozenges because cold virus concentrate in the nose. A condition of this argument is the fact that lozenges and gel contain the same concentration of zinc. If the gel had more zinc than the lozenge, then the higher concentration of zinc might account for its increased efficacy.

This is basically what choice C does. It undermines the assumption that both medications contain the same concentration of zinc. If the citric acid in the lozenge is interfering with the zinc, then it is possible that the gel works better simply because its zinc is NOT being interfered with. A lozenge with no citric acid (which presumably would taste awful) might work just as well as the gel. Therefore we cannot assume that the gel works better because cold virus is in the nose. It may be the lack of citric acid that makes the gel work better.

Therefore C is correct.
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Re: zinc lozenges treatment for the common cold [#permalink] New post 10 Oct 2011, 22:37
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Re: zinc lozenges treatment for the common cold [#permalink] New post 14 Oct 2011, 09:01
Argument here is old virus tend to concentrate in the nose, not the mouth.

A does not work because, here we are not comparing nasal vs mouth zinc. Here it is basically between gel with zinc and non zinc.

E does not work because, here again comparison between gel and spray, not between nose and mouth gels.
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Re: zinc lozenges treatment for the common cold [#permalink] New post 16 Oct 2011, 19:13
+1 for C.

Good question.

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Re: Though sucking zinc lozenges has been promoted as treatment [#permalink] New post 12 Nov 2011, 20:25
+1 C !
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Re: Though sucking zinc lozenges has been promoted as treatment [#permalink] New post 20 Nov 2011, 21:29
+1 C
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Re: Though sucking zinc lozenges has been promoted as treatment [#permalink] New post 21 Nov 2011, 14:04
C it is
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Re: Though sucking zinc lozenges has been promoted as treatment   [#permalink] 21 Nov 2011, 14:04
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