首页
登录
职称英语
It often seems that some possess superhuman eating powers, allowing them to d
It often seems that some possess superhuman eating powers, allowing them to d
游客
2024-01-24
58
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] How did a mouse gain weight with mutations of ankyrin-B?
选项
A、The fat cells in the mouse would take more glucose to create more fat.
B、The cell membrane in the mouse could open the gate of fat into the mouse.
C、The glucose could function as a barrier to prevent the fat from reducing.
D、The ankyrin-B could make the mouse eat more.
答案
A
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3389972.html
相关试题推荐
Asavolunteer,JohnApollosislosingweight—theold-fashionedway—byeating
Asavolunteer,JohnApollosislosingweight—theold-fashionedway—byeating
Asavolunteer,JohnApollosislosingweight—theold-fashionedway—byeating
Itoftenseemsthatsomepossesssuperhumaneatingpowers,allowingthemtod
Itoftenseemsthatsomepossesssuperhumaneatingpowers,allowingthemtod
Thesecrettoeatinglessandbeinghappyaboutitmayhavebeencrackedyea
Thesecrettoeatinglessandbeinghappyaboutitmayhavebeencrackedyea
CreatingaHarmoniousFamilyForthispart,youareallowed30minutestowr
Itoftenseemsthatsomepossesssuperhumaneatingpowers,allowingthem
Itoftenseemsthatsomepossesssuperhumaneatingpowers,allowingthem
随机试题
Thepastagesofmanhaveallbeencarefullylabeledbyanthropologists.De
______(提前确认一下预定情况),oritwillberegardedascancellationautomatically.Confir
AsyoumakeyourwaythroughthecrowdedstallsofBeijing’sfoodmarketsnowada
如果计算机断电,则()中的数据会丢失A.ROM B.EPROM C.RAM
具体问题具体分析所依据的辩证法原理是()。 A.矛盾的同一性 B.矛盾的斗争
女性老年期是指年龄A:>45岁 B:>50岁 C:>60岁 D:>55岁
在测量范围内,SF6气体密度继电器的指针偏转应平稳,任何压力点均应无明显跳动和卡
根据签约代表所代表的范围不同,集体合同可分为( )。A.基层集体合同B.单位集
沪深300指数期货合约的合约月份为()。A.当月 B.下月 C.随后两个季
在投资项目经济费用效益分析中,下列各项应作为转移支付处理的有() A.企
最新回复
(
0
)