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
2012-05-28
66
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/lCE7777K
0
大学英语六级
相关试题推荐
A、Stayawayfromtheinfectedpeople.B、Haveagoodrestanddrinkplentyoffluids.C、Gettheflushotonceayear.D、Takemedi
A、Silentreadinghadnotbeendiscovered.B、Therewerefewplacesavailableforprivatereading.C、Fewpeoplecouldreadforthe
A、Itwassettledmorethan300yearsago.B、AlexanderGrahamBellvisitedthere.C、Alargenumberofitsresidentsweredeaf.D、
Inallone’slifetimeitisoneselfthatonespendsthemosttimebeingwithordealingwith.Butitis【C1】______oneselfthato
Inallone’slifetimeitisoneselfthatonespendsthemosttimebeingwithordealingwith.Butitis【C1】______oneselfthato
Inallone’slifetimeitisoneselfthatonespendsthemosttimebeingwithordealingwith.Butitis【C1】______oneselfthato
Inallone’slifetimeitisoneselfthatonespendsthemosttimebeingwithordealingwith.Butitis【C1】______oneselfthato
EntertainmentinLondonBuyingBooksLondonersaregreatreaders.Theybuyvastnumbersofnewspapersandmagazinesan
EntertainmentinLondonBuyingBooksLondonersaregreatreaders.Theybuyvastnumbersofnewspapersandmagazinesan
随机试题
试析巴金《激流三部曲》中觉新这一人物形象。
在Windows7系统中,以下_____操作可以用于关闭“资源管理器”窗口。
儿童每日摄人脂肪应占总热量的
哪种心律失常易发生"心输出量减少"护理问题:
石某系某市无业人员,某日因琐碎小事将张某和李某打致轻伤,张某将案件起诉到法院,李某接到法院通知后表示不想追究石某的责任,没有参加诉讼。一审宣判后,李某反悔,就同一事实向法院提起自诉。该法院应当如何处理?()
在集合资产管理计划说明书中,集合计划有关当事人介绍包括()。
下列选项中,不属于按客户类型分类的理财业务是()。
下列资产中,不需要计提折旧的有()。
Inthecollege-admissionswars,weparentsarethetruefights.Wearepushingourkidstogetgoodgrades,takeSATpreparatory
律师王某在代理一起民事诉讼案件时,编造了一份对自己代理的一方当事人有利的虚假证言,指使证人李某背熟以后向法庭陈述,致使本该败诉的己方当事人因此而胜诉。王某的行为构成何罪?()
最新回复
(
0
)