首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
It often seems that some possess superhuman eating powers, allowing them to down an entire pizza while remaining rail-thin. Othe
It often seems that some possess superhuman eating powers, allowing them to down an entire pizza while remaining rail-thin. Othe
admin
2020-02-09
55
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.
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://kaotiyun.com/show/lyp7777K
0
大学英语四级
相关试题推荐
Arewereadyforthelibraryofthefuture?A)Librarianstodaywilltellyoutheirjobisnotsomuchtotakecareofbooks
Forcenturies,inthecountriesofsouthandSoutheastAsiatheelephanthasbeenanintimatepartoftheculture,economyandr
A"memorypill"thatcouldaidexamrevisionandhelptopreventpeopleforgettingimportantanniversariesmaysoonbeavailable
A、EnglishLiterature.B、PublicAdministration.C、French.D、Management.C男士提到在诺丁汉大学拿到了法语学位,因此选C。A有迷惑性,但是EnglishLiterature是女士的专业:
YoungpeopleintheUnitedStatesarefallingbehindtheiroverseaspeersinreading,mathandscience,PresidentBarackObamas
A、It’smostbeautifulinsummer.B、Ithasmanyhistoricalbuildings.C、Itwasgreatlyexpandedinthe18thcentury.D、It’stheo
A、Theyareeatingfordinner.B、Theyaretalkingabouttheirpromotion.C、Theyarechoosingtheirmenus.D、Theyarecelebrating
A、Theft.B、Cheating.C、Aircrash.D、Roadaccidents.A短文开头部分提到,人们在外出旅游时遇到的大部分人都是既友好又热情的,但也会遇到很多危险,而其中最为常见的就是盗窃,故A)为答案。
A、Toreporttohernewspaper.B、TorefreshherFrench.C、Tovisitherparents.D、Tomeetherfriends.B短文提到,克劳德特每年都会在法国待上一个月,从而不
Theoceanisheatingup.That’stheconclusionofanewstudythatfindsthatEarth’soceansnow【C1】______heatattwicetherat
随机试题
我国《就业促进法》中规定的具体负责全国就业促进工作的部门是_________。
Theuseofthemotorcarisbecomingmoreandmorewidespreadinthetwentiethcentury;asanincreasingnumberofcountriesdeve
胸部损伤中,第4-7肋骨较长是固定,因此最难折断。
我国常用的框幅式航空摄影仪主要有()。
“预提费用”账户如有余额,其余额一般在贷方。()
会计科目是______的名称,会计科目的内容通过______反映出来。
下列哪一选项属于运动损伤治疗与康复的物理疗法?()
已知函数f(x)=xe-x(x∈R).求函数f(x)的单调区间和极值;
视图机制具有很多优点,下面的()不是它的优点。
Nowadays,airtravelisvery【C1】______.WearenotsurprisedwhenwewatchonTVthatapoliticianhastalkedwithFrenchPresid
最新回复
(
0
)