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
考研
Imagine eating everything delicious you want—with none of the fat. That would be great, wouldn’t it? New "fake fat" products
Imagine eating everything delicious you want—with none of the fat. That would be great, wouldn’t it? New "fake fat" products
admin
2012-02-02
54
问题
Imagine eating everything delicious you want—with none of the fat. That would be great, wouldn’t it?
New "fake fat" products appeared on store shelves in the United States recently, but not everyone is happy about it Makers of the products, which contain a compound called olestra, say food manufacturers can now eliminate fat from certain foods. Critics, however, say the new compound can rob the body of essential vitamins and nutrients (营养物) and can also cause unpleasant side effects in some people. So it’s up to decide whether the new fat-free products taste good enough to keep eating.
Chemists discovered olestra in the late 1960s, when they were searching for a fat that could be digested by infants more easily. Instead of finding the desired fat, the researchers created a fat that can’t be digested at all.
Normally, special chemicals in the intestines (肠) "grab" molecules of regular fat and break them down so they can be used by the body. A molecule of regular fat is made up of three molecules of substances called fatty acids.
The fatty acids are absorbed by the intestines and bring with them the essential vitamins A, D, E, and K. When fat molecules are present in the intestines with any of those vitamins, the vitamins attach to the molecules and are carried into the bloodstream.
Olestra, which is made from six to eight molecules of fatty acids, is too large for the intestines to absorb. It just slides through the intestines without being broken down. Manufacturers say it’s that ability to slide unchanged through the intestines that makes olestra so valuable as a fat substitute. It provides consumers with the taste of regular fat without any bad effects on the body. But critics say olestra can prevent vitamins A, D, E, and K from being absorbed. It can also prevent the absorption of carotenoids (类胡萝卜素 ), compounds that may reduce the risk of cancer, heart disease, etc.
Manufacturers are adding vitamins A, D, E, and K as well as carotenoids to their products now. Even so, some nutritionists are still concerned that people might eat unlimited amounts of food made with the fat substitute without worrying about how many calories they are consuming. (381 words)
What is a possible negative effect of olestra according to some critics?
选项
A、It may impair the digestive system.
B、It may affect the overall fat intake.
C、It may increase the risk of cancer.
D、It may spoil the consumers’ appetite.
答案
C
解析
转载请注明原文地址:https://kaotiyun.com/show/DRna777K
本试题收录于:
艺术硕士(艺术基础)题库专业硕士分类
0
艺术硕士(艺术基础)
专业硕士
相关试题推荐
Butthesuccessofscience,bothitsintellectualexcitementanditspracticalapplication,dependsupontheself-correctingc
Butthesuccessofscience,bothitsintellectualexcitementanditspracticalapplication,dependsupontheself-correctingc
Thefactthatblindpeoplecan"see"thingsusingotherpartsoftheirbodiesapartfromtheireyesmayhelpustounderstando
Arecentstudy,publishedinlastweek’sJournaloftheAmericanMedicalAssociation,offersapictureofhowriskyitistoget
ItcameassomethingofasurprisewhenDiana,PrincessofWales,madeatriptoAngolain1997,tosupporttheRedCross’scamp
Mostepisodesofabsent-mindedness—forgettingwhereyouleftsomethingorwonderingwhyyoujustenteredaroom—arecausedbya
Everyartistknowsinhisheartthatheissayingsomethingtothepublic.Notonlydoeshewanttosayitwell,buthewantsit
Everyartistknowsinhisheartthatheissayingsomethingtothepublic.Notonlydoeshewanttosayitwell,buthewantsit
Reebokexecutivesdonotliketoheartheirstylishathleticshoescalled"footwearforyuppies(雅皮士,少壮高薪职业人士)".Theycontendth
随机试题
曾是古代所谓“西南夷”杂居地区的是()
阴道及宫颈细胞学检查的禁忌证是
【背景资料】某市体育馆配套安装工程项目经过业主施工招标,选定A安装公司为中标单位。施工合同中约定,设备由业主负责采购。A安装公司将通风空调工程的安装分包给了B专业工程公司。该工程在施工招标和合同履行过程中发生了下述事件:事件一:空调设备
竞价结果可能出现()。Ⅰ.全部成交Ⅱ.部分成交Ⅲ.不成交Ⅳ.协议成交
收入的特征表现为()。
下列哪个流派倾向于用正向积极的角度解读家庭面临的困扰,用“未来取向”的解释启发家庭构想未来的计划?()
2015年2月2日,在省部级主要领导干部学习贯彻党的十八届四中全会精神全面推进依法治国专题讨论班开班典礼上,习近平总书记集中论述了“四个全面”战略布局的逻辑关系。这“四个全面”分别是指:全面建成小康社会、全面深化改革、全面依法治国、()。
证券专营机构从事证券自营业务必须具有不低于1000万元人民币的净资产。()
Motherinsistedthat______.
Healthis_______countsmost.
最新回复
(
0
)