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
42
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
A、Theycouldfindmorewildanimalsthen.B、Thegrassbecomesyellowwhichismorebeautiful.C、Therewouldbenomosquitosting
Talktoanyparentofastudentwhotookanadventurousgapyear(ayearbetweenschoolanduniversitywhensomestudentsearnm
Theincreaseinglobaltrademeansthatinternationalcompaniescannotaffordtomakecostlyadvertisingmistakesiftheywantt
Thenumberofparentsteachingtheiroffspringathomewillincreaseifthecurrentpublicschoolsystemcontinuestobeviewed
IwenttoaCatholicboysschoolinBlackpoolintheNorthofEngland.InmyfirstyearintheseniorschoolIwasanerdykid,
A、Theresultshaven’tcomeoutyet.B、Theresultswerecheckedagainlastnight.C、Thewomanneedsanothertesttomorrow.D、The
Withtheglobaleconomynowtakingmoreexecutivestofar-awayplaceslikeBeijingandMumbai,jetlagisbecomingabiggerprob
Hooperstartedthecarand______itoutoftheparkingplace.
A、She’llconsidertheman’sadvice.B、Shedoesn’thavetimetogooutside.C、Sheshouldgooutandgetsomefreshair.D、Shewil
Probablythehardestpartofsettinggoalsisthefirststepofactuallydecidingtotakeaction!Themainhurdlefacingmostpe
随机试题
Whatdoesthespeakersuggestpeoplealongtheshorelinedo?
设立商业银行应符合哪些条件?
A、毛果芸香碱B、阿托品C、卡巴胆碱D、美卡拉明E、毒扁豆碱胆碱酯酶抑制药
A.扁平疣B.艾滋病C.梅毒D.接触性皮炎E.甲癣属真菌性疾病的是
卢斯先生是纽约人,在纽约有住所。被告东北航空公司是在马萨诸塞州注册的公司,它从事纽约州至马萨诸塞州之间的空中运输。卢斯先生在纽约买了该航空公司的机票,乘坐飞机前往马萨诸塞州,中途因为电机在马萨诸塞州坠毁而身亡。卢斯先生的遗产管理人在纽约州法院提起诉讼,要求
城市抗震设施规划的主要任务是()。
企业、矿井防治水工作的第一责任人是单位的()。
甲持有兴达有限公司69%的股权,任该公司董事长;乙、丙为公司另外两个股东。因打算移居海外,甲拟出让其全部股权。对此,下列说法错误的有()。
国债相对规模的衡量指标主要有()。
请在“考试项目”菜单上选择“电子表格软伺:使用”菜单项,完成下面的内容。(所有的电子表格文件都必须建立在指定的文件夹中。)在考生文件夹下创建工作簿文件EX3.XLS,按要求在EX3.XLS中完成以下操作。1.在sheetl工作表中建
最新回复
(
0
)