首页
登录
职称英语
It often seems that some possess superhuman eating powers, allowing them
It often seems that some possess superhuman eating powers, allowing them
游客
2024-01-23
19
管理
问题
It often seems that some possess superhuman eating powers, allowing them to down an entire pizza while remaining rail-thin. Others only need to think of a slice and gain five pounds. Now one doctor says there’s evidence that genetics could be behind some of these differences. Regardless of how much you eat, your weight may be out of your hands.
Vann Bennett, a biochemist at Duke University and his team led a new investigation and discovered why this happens. They engineered mice to have several common modifications of the gene found in humans. They observed that mice who had mutations of ankyrin-B took more glucose (葡萄糖) into their fat cells, which in turn made more fat. Typically, the cell membrane (膜) acts as a barrier to prevent glucose from entering these cells; the alteration kept the gate open.
The change may serve a useful purpose. "Probably this is not always a bad thing," Bennett told Newsweek. "It could help people survive famines in the past. But today we have so much food that it probably is a bad thing." Our modern diets of fast food drive-thru windows and aisles of packaged snacks make the alteration work against us.
Dieters have long been told to watch their calories and exercise more, but this new finding suggests that a blanket approach doesn’t work for everyone. And the study illustrates a common problem for people: increased weight gain as a function of age. Our metabolism naturally slows with age, making it harder to maintain the weight of our 30-year-old selves when we’re 50. Now add an unruly ankyrin-B gene, and it may seem impossible to stay slim.
The mice in the study gained more weight when on high-fat diets. Bennett believes this is because once the fat cells received the glucose and start making more fat, they become sensitive to other fat. Despite being studied in mice, the researchers believe further research on this gene, and possibly others, could potentially create a field of customized diets and health plans based on genetics. Bennett envisions such assessments being performed at birth one day. For now, frustrated dieters can take comfort with one saying: It’s not you. it’s your genes. [br] According to a doctor, what makes people different in weight?
选项
A、The amount of food they take in.
B、The amount of time they spend on exercise.
C、The genes in their body.
D、The different lifestyles.
答案
C
解析
细节辨认题。定位句指出,一位博士说已有证据表明遗传可能是其中一些差异的原因。不管你吃多少,你可能都无法掌控自己的体重。由此可知,遗传基因是导致人们体重不同的原因,故答案为C。
转载请注明原文地址:https://tihaiku.com/zcyy/3387817.html
相关试题推荐
Asavolunteer,JohnApollosislosingweight—theold-fashionedway—byeating
Itoftenseemsthatsomepossesssuperhumaneatingpowers,allowingthemtod
Itoftenseemsthatsomepossesssuperhumaneatingpowers,allowingthemtod
Itoftenseemsthatsomepossesssuperhumaneatingpowers,allowingthemtod
Thesecrettoeatinglessandbeinghappyaboutitmayhavebeencrackedyea
Thesecrettoeatinglessandbeinghappyaboutitmayhavebeencrackedyea
Thesecrettoeatinglessandbeinghappyaboutitmayhavebeencrackedyea
CreatingaHarmoniousFamilyForthispart,youareallowed30minutestowr
Itoftenseemsthatsomepossesssuperhumaneatingpowers,allowingthem
Itoftenseemsthatsomepossesssuperhumaneatingpowers,allowingthem
随机试题
Todefinesciencewemaysimplycallit______.[br]Ascientistbeingintereste
DaydreamingⅠ.Daydreamingcanbeharmfulbecauseitwascon
[originaltext]F:HeyKirk,weaxegettingawayfortheweekendtogocanoeing.
[originaltext]W:Iwanttoregisterforthismathematicscourse.M:I’msorryr
如果要将目标网络为202.117.112.0/24的分组经102.217.115
河北省2010年全年城镇居民人均可支配收入达16263.4元,比上年增长10.
大体积混凝土施工应选用下列中的哪种水泥?A.硅酸盐水泥 B.矿渣水泥 C.铝
有宫缩乏力的产妇应在胎儿什么部位娩出后立即肌内注射缩宫素10U,并继续静脉滴注缩
A.阿司匹林B.对乙酰氨基酚C.吲哚美辛D.吡罗昔康E.丙磺舒与三氯化铁试液作用
下列现金收支管理措施中,能提高现金利用效率的是( )。 A.充分使用现金浮
最新回复
(
0
)