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【OG20-P570-636题】
Which of the following most logically completes the passage?
Leptin, a protein occurring naturally in the blood, appears to regulate how much fat the body carries by speeding up the metabolism and decreasing the appetite when the body has too much fat. Mice that do not naturally produce leptin have more fat than other mice, but lose fat rapidly when they are given leptin injections. Unfortunately, however, leptin cannot be used as a dietary supplement to control fat, since_________.
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leptin是一种天然存在于血液中的蛋白质,当体内脂肪过多时,leptin似乎通过加速新陈代谢和降低食欲来调节身体所携带的脂肪,而不天生产生leptin的老鼠脂肪会更多,但当它们注射leptin时,它们很快就会失去脂肪。然而,leptin不能作为控制脂肪的饮食补充,因为_______。解释题
A.对,消化系统会在蛋白质进入血液之前把它分解掉,他因来解释,说明leptin做饮食补充不会发挥有效性。
B.是否有Pharmaceuticals能减重,无关。
C.low levels of leptin会有high percentage of body fat, 方向一致,不能说明为啥饮食不行。
D.老鼠是啥品种,无关。
E.注射leptin,老鼠会减重,没说明为啥饮食不行。
题目讨论 (1条评论)

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看客2018
Mice血液中含有leptin蛋白,可以降脂。饮食中补充leptin蛋白,却无法控脂,为什么?当然是因为,没有进入血液。
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0 回复 2018-09-10 16:06:39
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看客2018回复看客2018
逻辑关系发生的有效性研究
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0 回复 2018-09-10 16:07:19
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