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Q19: Which of the following most logically completes the

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Q19: Which of the following most logically completes the [#permalink]

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13 Oct 2005, 13:50
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Q19:
Which of the following most logically completes the passage?
A certain tropical island received food donations in the form of powdered milk for distribution to its poorest residents, who were thought to be malnourished. Subsequently, the rate of liver cancers among those islanders increased sharply. The donated milk was probably to blame: recent laboratory research on rats has shown that rats briefly exposed to the substances aflatoxin tend to develop liver cancer when fed casein, a milk protein.
This result is relevant because _______.
A. in the tropics, peanuts, a staple of these island residents, support a mold growth that produces aflatoxin
B. the liver is more sensitive to carcinogens, of which aflatoxin may be one, than most other bodily organs
C. casein is not the only protein contained in milk
D. powdered milk is the most appropriate form in which to send milk to a tropical destination
E. the people who were given the donated milk had been screened for their ability to digest milk
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14 Oct 2005, 07:55
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A for me

Rats which are exposed to aflatoxin, develop liver cancer when they are fed casein, a protein found in milk. Humans on a certain tropical island developed liver cancer after being fed powdered milk. IMO The information about rats would only be relevant if humans had also been exposed to aflaxtoxin.

OA?
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13 Oct 2005, 23:26
i think it is A
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14 Oct 2005, 00:41
Didn't understand this too well...but on exam day, I would mark B.

Who ever gets it right, please explain...
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14 Oct 2005, 08:34
Going with A.

Based on the rat test, the rats developed the cancer from drinking the milk becasue the toxins were in their system.

So, A tells us that the toxins are in the system of the islanders because they eat peanuts.
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14 Oct 2005, 08:46
I would go for B

That is the only option which has some connection with the liver and the aflatoxin.
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14 Oct 2005, 13:25
IMO clearly A

So peanut produces aflotoxin and the milk power supplied casein....
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14 Oct 2005, 13:47
Good explanation kimmyg
OA is A indeed.
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14 Oct 2005, 13:47
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