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
2013-07-20
74
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/DZn7777K
0
大学英语六级
相关试题推荐
IntheUnitedStates,thefirstdaynurserywasopenedin1854.Nurserieswereestablishedinvariousareasduringthe【C1】______
Parentsareoftenupsetwhentheirchildrenpraisethehomesoftheirfriendsandregarditasaslur(诽谤,中伤)ontheirowncooki
Parentsareoftenupsetwhentheirchildrenpraisethehomesoftheirfriendsandregarditasaslur(诽谤,中伤)ontheirowncooki
Theoldestandsimplestmethod,then,ofdescribingdifferencesinpersonalitywasto【B1】______peopleaccordingto【B2】______
A、Doingsomeexercises.B、Celebratingtheopeningofthelibrary.C、Collectingmoneyforanewhospital.D、Advertisingtheirhom
TheUnpaidIntern,LegalorNotWithjobopeningsscarceforyoungpeople,thenumberofunpaidinternships(实习)hasclimbed
A、She’sgotastomachache.B、Shefeelsperfectlyfine.C、She’sgoingtogetmarried.D、She’sgoingtohaveababy.D女士说自己最近几天感觉累
AttheUniversityofVirginiainCharlottesville,psychologyprofessorBellsDePaulogot77studentsand70townspeopletovolun
AttheUniversityofVirginiainCharlottesville,psychologyprofessorBellsDePaulogot77studentsand70townspeopletovolun
DoctorSheldonPollackwaschargedthat______.Fromtheendingpartofthepassage,wecanconcludethat______.
随机试题
A.辛开苦降,辟秽解毒B.疏风利水C.滋阴补肾,平肝潜阳D.泻肺逐水,宁心安神E.益气健脾,宣肺利水
A、给氧法B、背部叩击法C、人工呼吸D、全身约束法E、局部约束法复苏()
经产妇,33岁,G2P1,40周妊娠,规律宫缩3小时,宫缩持续50秒,间隔3分钟,头位,胎心150次/分,肛查宫口开大4cm,羊膜囊突。此时正确的处理是
行心脏DSA,显示二尖瓣瓣口的最佳投射位置是
中国居民纳税人王伟2005年8月取得以下8项所得,计算每项收入应缴纳的所得税。从所在境内甲企业取得工资收入1800元(2)从所在境内乙企业取得工资收入3000元;(1)、(2)项他应纳税()
下列成本差异中,通常不属于生产部门责任的有()。
银行业是一个信息对称程度很高的行业,在创新方面,信息对称程度更高。()
强调不卑不亢,一是要反对______,二是要反对______。
①大自然是个有机整体②只要其中一个要素发生变化,就会引起其他要素的相应变化③地理环境各个要素之间存在着相互联系、相互影响、相互渗透、相互制约的依存关系④一个环节紧扣着另一个环节,一个过程向着另一个过程转化⑤并直接或间接地影响到人类的生存和发展⑥最
一个人如果没有崇高理想或者缺乏理想,就会像一艘没有舵的船,随波逐流,难以顺利到达彼岸。这主要说明了理想的作用是
最新回复
(
0
)