PT118.S4.Q5 > Question

SECTION 1 · lr

Question 1 Question 2 Question 3 Question 4 Question 5 Question 6 Question 7 Question 8 Question 9 Question 10 Question 11 Question 12 Question 13 Question 14 Question 15 Question 16 Question 17 Question 18 Question 19 Question 20 Question 21 Question 22 Question 23 Question 24 Question 25 Question 26

SECTION 2 · rc

PASSAGE 1

Question 1 Question 2 Question 3 Question 4 Question 5 Question 6

PASSAGE 2

Question 7 Question 8 Question 9 Question 10 Question 11 Question 12 Question 13 Question 14

PASSAGE 3

Question 15 Question 16 Question 17 Question 18 Question 19

PASSAGE 4

Question 20 Question 21 Question 22 Question 23 Question 24 Question 25 Question 26 Question 27

SECTION 3 · lr

SECTION 4 · lr

Why don’t mice develop bladder cancer when fed high doses of saccharin, even though rats who are fed high doses of saccharin do develop such cancer?

The correct answer should tell me something different about mice compared to rats that would inhibit the development of bladder cancer. It probably has something to do with silicate crystals, which the stimulus says are toxic to cells in rat bladders.

Saccharin in rats leads to toxic silicate crystals in their bladders. This answer suggests saccharin in mice won’t develop silicate crystals in their bladders, which could explain why mice don’t get bladder cancer from saccharin.

Is faster regeneration of cells something that would prevent bladder cancer? We don’t know.

This doesn’t help differentiate mice and rats. So, it can’t help explain the different reactions in mice and rats to saccharin.

This makes the lack of bladder cancer in mice who are given saccharin more difficult to explain. Saccharin is an artificial sweetener, so we might think mice would react similarly to saccharin as to the other sweeteners mentioned in this answer.

PrepTest 118 - Section 4 - Question 5

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