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Salmonella is a food-borne microorganism that can cause

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Salmonella is a food-borne microorganism that can cause [#permalink] New post 05 Jan 2004, 20:11
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Salmonella is a food-borne microorganism that can cause intestinal illness. The illness is sometimes fatal, especially if not identified quickly and treated. Conventional Salmonella tests on food samples are slow and can miss unusual strains of the microorganism. A new test identifies the presence or absence of Salmonella by the one piece of genetic material common to all strains. Clearly, public health officials would be well advised to replace the previous Salmonella tests with the new test.

16. Which one of the following, if true, most substantially weakens the argument?

(A) The new test identifies genetic material from Salmonella organisms only and not from similar bacteria.

(B) The new test detects the presence of Salmonella at levels that are too low to pose a health to people.

(C) Salmonella is only one of a variety of food-borne microorganism that can cause intestinal illness.

(D) The new test has been made possible only recently by dramatic advances in biological science.

(E) Symptoms of Salmonella poisoning are often mistaken for those of other common intestinal illness.
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 [#permalink] New post 05 Jan 2004, 21:13
Let me provide some explaination for the answers you have chosen

According to B if the salmonella level is too low then people might be falsely catagorized as diseased. So the test is too sensitive?

I will wait for some more time to post the answer.
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 [#permalink] New post 05 Jan 2004, 21:24
B, I will go with the family as well. If the new test detects the level of salmonella at levels too low to pose a threat, then it's utility will be reduced as many food products, otherwise unharmful, could be recalled uselessly
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 [#permalink] New post 05 Jan 2004, 21:34
I guess I have waited enough. I chose B thinking that people might be subjected to unnecessary treatment eventhough they dont have any disease and might even develop complications.

The correct answer is C. I doubt it. If intestinal illness is cause by someother germ otherthan salmonella then the argument does not provide enough evidence that the old test can detect those germs as well.
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 [#permalink] New post 06 Jan 2004, 01:10
anandnk wrote:
I guess I have waited enough. I chose B thinking that people might be subjected to unnecessary treatment eventhough they dont have any disease and might even develop complications.
The correct answer is C. I doubt it. If intestinal illness is cause by someother germ otherthan salmonella then the argument does not provide enough evidence that the old test can detect those germs as well.

here is an excerpt from the princeton review (pr) =i apologise to guys from pr for copyright matter, if any of them are reading it, i just try to help people=
------------------------------------------------
beware of your heartstrings!
we are all human, and we all have feelings. because of this, ets likes to mine its answer choices with sentimental favorites that appeal to our sense of decency or fairness. it's tough worls out there, though, and logic derives from the head, not the heart.
------------------------------------------------
yet it does not explain why the answer is c.. :)
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 [#permalink] New post 06 Jan 2004, 07:32
Source of the qsn pls. I chose B too!
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 [#permalink] New post 06 Jan 2004, 07:54
May be the test is supposed to find out all the other microorganism that can cause intestinal illness.
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 [#permalink] New post 06 Jan 2004, 08:33
The source is
http://www.studa.com/newexam/list.asp?boardid=174

I hate the word "May be" this is what ETS avoids. Well everyone chose B I am not unhappy for being wrong.

Thanks for your replies folks.
  [#permalink] 06 Jan 2004, 08:33
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