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
103
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://kaotiyun.com/show/6Bb7777K
0
大学英语六级
相关试题推荐
MorethantwomillionpeopleinEuropenowhavefibrebroadbanddirecttotheirhome,suggestsasurvey.Thelatestfigures
MorethantwomillionpeopleinEuropenowhavefibrebroadbanddirecttotheirhome,suggestsasurvey.Thelatestfigures
PartⅡReadingComprehension(SkimmingandScanning)Directions:Inthispart,youwillhave15minutestogooverthepassageq
Tobe【B1】______inthejobinterview,youshould【B2】______certainpersonaland【B3】______qualities.Youneedtocreateagood
WhichofthefollowingmaybebannedbyeBayoverseers?WhenyouclickonalistingontheeBayWebsite,yourcomputerfirstc
Scientistshaveknownfordecadesthatcoffeebeanscontainoil.Mohapatraandcolleagues,however,werethefirsttoanalyzeco
Urgingboredfriendstokeepplayingwithyouisnotlimitedtohumans.Agorilla(大猩猩)thatwantstocontinueagamewillalso
What’stheprevailingbelief?.Whenthereisadiscrepancybetweenidealandthereality,peoplearemostlikelytobecome_____
A、Hedoesn’tlikenewdormrooms.B、Hedoesn’thavearoommate.C、Hedislikeshavingaroommate.D、Heprefershavingaroommate.
Havinganimportantappointment,Ilefttheofficeearlierthanusualthismorning______trafficjam.
随机试题
A.HoldthelineB.flightnumberC.askaquestionD.ToNewYorkE.MayIhaveyournameF.reconfirmmyseatG.pleasecheck
膨出的膀胱随同阴道前壁位于阴道内,为:膨出的部分膀胱暴露于阴道口外,为:
有关护理学任务、研究范围的描述正确的是
瘤的特点没有下列哪一项()
在工程实施过程中发生索赔事件以后,承包人首先应()。
宁波帅康厨房设备有限公司其前身是创办于1984年的浙江余姚市调谐器配件厂的宁波帅康集团公司的子公司。该公司成立于1993年5月,陆续推出吸烟王、帅旋风、丽彩王、新世纪等18大系列,具有先进的生产设备和检测设备,其中包括120万台年生产能力的抽油烟机生产装配
衡量各科教学质量的重要标准是()。
文明执勤的要点是:忠于职守,服从领导,顾全大局,警容严整。()
人力资本理论把教育看成人力资本的重要因素,该理论的创立者是()。
一个C++语言程序的开发步骤通常包括编辑、【】、链接、运行和调试。
最新回复
(
0
)