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# Irradiation of food by gamma rays

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BSchool Forum Moderator
Status: Transforming Educational System
Joined: 21 Sep 2016
Posts: 450
Location: India
Concentration: Nonprofit, Social Entrepreneurship
Schools: Boston U '20 (A)
WE: Education (Non-Profit and Government)

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24 Oct 2017, 22:34
00:00

Difficulty:

55% (hard)

Question Stats:

61% (01:34) correct 39% (02:13) wrong based on 54 sessions

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Proponent: Irradiation of food by gamma rays would keep it from spoiling before it reaches the consumer in food stores. The process leaves no radiation behind, and vitamin losses are comparable to those that occur in cooking, so there is no reason to reject irradiation on the grounds of nutrition or safety. Indeed, it kills harmful Salmonella bacteria, which in contaminated poultry have caused serious illness to consumers.

Opponent: The irradiation process has no effect on the bacteria that cause botulism, a very serious form of food poisoning, while those that cause bad odors that would warn consumers of botulism are killed. Moreover, Salmonella and the bacteria that cause botulism can easily be killed in poultry by using a safe chemical dip.

Which one of the following could the opponent properly cite as indicating a flaw in the proponent’s reasoning concerning vitamin losses?
(A) After irradiation, food might still spoil if kept in storage for a long time after being purchased by the consumer.
(B) Irradiated food would still need cooking, or, if eaten raw, it would not have the vitamin advantage of raw food.
(C) Vitamin loss is a separate issue from safety.
(D) Vitamins can be ingested in pill form as well as in foods.
(E) That food does not spoil before it can be offered to the consumer is primarily a benefit to the seller, not to the consumer.

Source: LSAT Critical Reasoning

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25 Oct 2017, 00:59
Proponent: Irradiation of food by gamma rays would keep it from spoiling before it reaches the consumer in food stores. The process leaves no radiation behind, and vitamin losses are comparable to those that occur in cooking, so there is no reason to reject irradiation on the grounds of nutrition or safety. Indeed, it kills harmful Salmonella bacteria, which in contaminated poultry have caused serious illness to consumers.

Opponent: The irradiation process has no effect on the bacteria that cause botulism, a very serious form of food poisoning, while those that cause bad odors that would warn consumers of botulism are killed. Moreover, Salmonella and the bacteria that cause botulism can easily be killed in poultry by using a safe chemical dip.

Which one of the following could the opponent properly cite as indicating a flaw in the proponent’s reasoning concerning vitamin losses?

So we have to focus on the vitamin loss and not safety as per the question

(A) After irradiation, food might still spoil if kept in storage for a long time after being purchased by the consumer.
This has no concern with the vitamin loss.

(B) Irradiated food would still need cooking, or, if eaten raw, it would not have the vitamin advantage of raw food.
Yes irradiated food will be cooked again. So there will be more loss to vitamins and if eaten raw already vitamin losses has happened. So the statement of vitamin loss "vitamin losses are comparable to those that occur in cooking" fells apart.

(C) Vitamin loss is a separate issue from safety.
We are not concerned about it.

(D) Vitamins can be ingested in pill form as well as in foods.
If this can happen then there is no worry and we should not be concerned about vitamin losses. We can use pill or vitamin can be ingested in food.(There may be side effects but it is out of scope.)
(E) That food does not spoil before it can be offered to the consumer is primarily a benefit to the seller, not to the consumer.
Not related to vitamin losses.
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Re: Irradiation of food by gamma rays &nbs [#permalink] 25 Oct 2017, 00:59
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