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30 Aug 2022, 01:30
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88% (01:25) correct
12%
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wrong
based on 108
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Exposure to a large dose of something that causes bodily damage—such as excessive heat, poison, or nuclear radiation—is of course harmful to an organism. But, surprisingly, exposure to small doses of such stressors has been shown to extend life span in various species, including fruit flies, protozoans, worms, and rodents.
Which one of the following, if true, most helps to explain the surprising phenomenon described above?
(A) In most of the species in which exposure to small doses of stressors increases longevity, the increase is so small that it is barely measurable.
(B) Exposure to small doses of stressors stimulates an organism’s natural repair mechanisms to fix any damage caused by the stressors as well as some unrelated damage.
(C) Exposure to a given dose of a poison or other stressor may cause more serious damage to some members of a species than to others.
(D) Repeated exposure to a stressor is much more likely than a single exposure to cause permanent damage to an organism.
(E) Even a substance that is extremely toxic will not harm an organism if the organism is exposed to only an extremely small quantity of the substance.
Which one of the following, if true, most helps to explain the surprising phenomenon described above?
(A) In most of the species in which exposure to small doses of stressors increases longevity, the increase is so small that it is barely measurable.
(B) Exposure to small doses of stressors stimulates an organism’s natural repair mechanisms to fix any damage caused by the stressors as well as some unrelated damage.
(C) Exposure to a given dose of a poison or other stressor may cause more serious damage to some members of a species than to others.
(D) Repeated exposure to a stressor is much more likely than a single exposure to cause permanent damage to an organism.
(E) Even a substance that is extremely toxic will not harm an organism if the organism is exposed to only an extremely small quantity of the substance.
30 Aug 2022, 07:10
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B explain the discrepancy of the argument. how small doses can helpful to increase the life span.
A - it cant explain why life span increase
C - Irrelevant
D - Irrelevant
E - Irrelevant
A - it cant explain why life span increase
C - Irrelevant
D - Irrelevant
E - Irrelevant
