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In the passage, the function of the highlighted portion( in yeast and worms, metabolism is both sped up and altered) is to
  • AProvide specific examples of organisms whose longevity does not increase in response to calorie restriction.
  • BIllustrate the probable means by which organisms placed on a calorie-restriction diet compensate for the reduction in available food-based level.
  • CSuggest the mechanism that is responsible for prolonging the life of organism whose calorie intake is significantly reduced.
  • DGive an example that explain why scientists` thinking about the physiological effects of calorie restriction changed.
  • EDistinguish the different ways that mammalian and non-mammalian metabolisms respond to significant reductions in calorie intake

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