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
For most people, fat is a burden. It doesn t really matter where it appears, we just don’t want it. But it turns out that our bo
For most people, fat is a burden. It doesn t really matter where it appears, we just don’t want it. But it turns out that our bo
admin
2012-08-05
60
问题
For most people, fat is a burden. It doesn t really matter where it appears, we just don’t want it. But it turns out that our bodies also make a unique form of fat tissue that behaves remarkably unlike any other: rather than storing excess energy, this fat actually burns through it. It’s called brown fat and health experts confirm for the first time that healthy adults have stores of this tissue, which researchers hope to study further as a potential new weight-loss treatment.
Human newborns have been known to have any significant deposits of brown fat, so called because of its abnormally high concentration of dark-colored mitochondria (线粒体), the engines that sustain cell activity. The primary purpose of brown fat is to regulate body temperature: the mitochondria-packed cells are designed to burn high quantities of sugar, and release that energy as heat—a mechanism that newborns rely on to keep themselves toasty.
As people age, however, the body becomes better at regulating temperature, so brown-fat stores shrink and white fat starts to emerge. A research team in Sweden has found that healthy adults retain a sizable amount of fat in the front and back of the neck expressing the same proteins as brown fat.
Identifying the presence of brown fat is one thing, but activating it to burn more sugar is another. Two studies confirmed that brown-fat cells become more active in the cold. But before we consider joining the Polar Bear Club, can brown fat actually cause weight loss? Brown fat may indeed allow a person to burn more calories with the same amount of consumption. On the basis of animal models, researchers calculate that 50g of brown fat could burn about 20% daily calorie an average person takes in. Leaner people tended to have more brown-fat deposits than overweight individuals. Interestingly, women were twice as likely as men to have active brown fat.
Still, the findings don’t necessarily mean that activating brown fat leads to a slimmer waist. For one thing, the body is especially good at maintaining balance, which is why a boost in calorie-burning can often make a hunger signal and prompt people to eat more to make up for the loss. And even if drug companies could find a way to activate brown fat safely, that excess activity could throw off other metabolic (新陈代谢的) systems and damage your health.
What can we learn from the first paragraph?
选项
A、All the people don’t like fat at all.
B、Fat is a kind of tissue storing excess energy.
C、Brown fat has a unique function that any other fat issue doesn’t have.
D、Brown fat can provide a new way to lose weight.
答案
C
解析
推理判断题。由第一段可知,专家们首次确认成年人身上有一种棕色脂肪有着燃烧脂肪的作用,这与其他脂肪的功能是不一样的,所以C)符合文意。
转载请注明原文地址:https://jikaoti.com/ti/5XrFFFFM
0
大学英语六级
相关试题推荐
A、He’stakingabreakfromstudying.B、Hehasalreadyfinishedstudying.C、Hewasassignedtowatchaprogrambyhisprofessor.
Thatexperiencesinfluencesubsequentbehaviourisevidenceofanobviousbutneverthelessremarkableactivitycalledrememberin
WhichofthefollowingmaybebannedbyeBayoverseers?PayPalandBidPayarespecialnamesfor______.
Accordingtotheauthor,Tolstoy’sabilitytowrite______.ItismentionedthatAncientRomewasruledby______.
A、It’sareliablewaytomakefriendsonline.B、Itisconvenienttogetintouchwiththeirparents.C、Itisregardedasawayo
A、Fiftyundergroundstationsweremadewaterproof.B、Afloodwallwasbuilt.C、Analarmsystemwassetup.D、Rescueteamsweref
ThereissomethingbadlywrongwiththewaystandardsforschoolsciencebeingsetintheUS.WhentheTexasStateBoardofEduc
RuthSimmonsjoinedGoldmanSachs’sboardasanoutsidedirectorinJanuary2000;ayearlatershebecamepresidentofBrownUni
Theyeventuallyplanto_______thehigh-speedconnectionson1,500oftheirplanesandsellthesystemtootherairlines.
Probablythehardestpartofsettinggoalsisthefirststepofactuallydecidingtotakeaction!Themainhurdlefacingmostpe
随机试题
A、 B、 C、 D、 D
照射75Gy不发生严重并发症的组织包括
白内障术后视力矫正通常用()
小儿7岁,夜间因右侧睾丸剧烈疼痛就诊,查体:右侧阴囊略红肿,左侧外观正常,双侧睾丸、附睾、精索未及明显异常,阴囊抬高试验阴性,超声检查:双侧睾丸血流未见明显异常,诊断考虑
某患者因急性肾衰竭入院,医生为其采血化验做离子检查。患者离子检测在临床中常用的方法是
临床上不合理用药主要表现在
一个大公司为了获取R&D资源,通过一定的渠道和支付手段,将另一个创新公司的整个资产或足以行使经营控制权的股份买下来的行为指的是()。
甲某2012年4月出售一处普通住宅,取得销售收入50万元,该住房于2008年4月购进,买价30万元,购买时支付税费合计1.5万元。甲某出售住房应缴纳营业税1万元。()
(-∞,-3)
Intelligence:aChangedView1Intelligencewasbelievedtobeafixedentity,somefacultyofthemindthatweallpossessandw
最新回复
(
0
)