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
A study by scientists in Finland has found that mobile phone radiation can cause changes in human cells that might affect the br
A study by scientists in Finland has found that mobile phone radiation can cause changes in human cells that might affect the br
admin
2011-05-29
64
问题
A study by scientists in Finland has found that mobile phone radiation can cause changes in human cells that might affect the brain, the leader of the research team said.
But Darius Leszczynski, who headed the 2-year study and will present findings next week at a conference in Quebec (魁北克), said more research was needed to determine the seriousness of the changes and their impact on the brain or the body.
The study at Finland’s Radiation and Nuclear Safety Authority found that exposure to radiation from mobile phones can cause increased activity in hundreds of proteins in human cells grown in a laboratory, he said.
"We know that there is some biological response. We can detect it with our very sensitive approaches, but we do not know whether it can have any physiological effects on the human brain or human body," Leszczynski said.
Nonetheless, the study, the initial findings of which were published last month in the scientific journal Differentiation, raises new questions about whether mobile phone radiation can weaken the brain’s protective shield against harmful substances.
The Study focused on changes in cells that line blood vessels and on whether such changes could weaken the functioning of the blood-brain barrier, which prevents potentially harmful substances from entering the brain from the bloodstream, Leszczynski said.
The study found that a protein called hsp27 linked to the functioning of the blood-brain barrier showed increased activity due to irradiation and pointed to a possibility that such activity could make the shield more permeable(能透过的), he said.
"Increased protein activity might cause cells to shrink—not the blood vessels but the cells themselves—and then tiny gaps could appear between those cells through which some molecules could pass," he said.
Leszczynski declined to speculate on what kind of health risks that could pose, but said a French study indicated that headache, fatigue and sleep disorders could result.
"These are not life-threatening problems but can cause a lot of discomfort," he said, adding that a Swedish group had also suggested a possible link with Alzheimer’s disease.
"Where the truth is, I do not know," he said.
Leszczynski said that he, his wife and children use mobile phones’, and he said that he did not think his study suggested any need for new restrictions on mobile phone use.
According to Leszczynski, how does a mobile phone affect one’s health?
选项
A、Mobile phone radiation can increase protein activities and such activities can make the brain’s protective shield more permeable.
B、Mobile phone radiation can shrink the blood vessels and prevent blood from flowing smoothly.
C、Mobile phone radiation will bring stress to people exposed to it.
D、Mobile phone radiation kills blood cells.
答案
A
解析
文章论述的是手机导致人体细胞变化,所以从第七段“The study found that a protein called hsp27 linked to the functioning of the blood-brain barrier showed increased activity due to irradiation and pointed to a possibility that such activity could make the shield more permeable(能透过的).”可以判断答案是A。
转载请注明原文地址:https://kaotiyun.com/show/xA6O777K
0
考博英语
相关试题推荐
•Readthearticlebelowaboutawebsite.•Aresentences16-22ontheoppositepage’Right’or’Wrong’?Ifthereisnotenoug
HowtoChangeCareersSuccessfullyStep1:Spendsomequalitytimeselectinganewcareer.Nooneknowswhatyouwantfroml
AimsofAssetManagementAimofassetmanagementistoachievegreatesteffectivenessandprofitabilityfromproductionand
Readthearticlebelowaboutatakeoverbattlebetweenahotelchainandaninvestmentcompany.Aresentences16-22ontheopp
Customhasnotbeencommonlyregardedasasubjectofanygreatmoment.TheinnerworkingsofourownBrainswefeeltobeuniqu
Computersarepermeatingalmosteveryaspectofourlives,includingmanyareaspreviouslyuntouchedbytechnology.【B1】Butunl
Olgahadalwaysenjoyedthecharacter-centeredbookswrittenbyAdeleKwanandwantedtoreadanotheroneifitseemedinteresti
Imagineanaccidentinwhichanuclearpowerplantreleasesradioactivegas.Thecloudstartsmovingwiththewind.Clearly,the
(Theauctioneer)mustknow(fair)accuratelythecurrent(marketvalues)ofthegoods(heisselling).
InsomecitiesofNorthChina,thenoisepollutionisaspronouncedasthatinTokyo.
随机试题
吡拉西坦与华法林合用可缩短凝血酶原时间。
患者男性,40岁,8小时前因塌方砸伤双下肢,伤后排尿一次,红茶色。体检:神清,血压140/90mmHe,脉搏62次/min,心律不齐,肢体肌张力低,对此病人不应选择哪项治疗
新生儿缺氧缺血性脑病早期主要的病理变化为
下列不属于缩瞳药的是()。
屋面排水天沟可以跨越下列哪种缝?
工程咨询投标财务建议书的附件包括()。
CNC装置是一个()装置。
下列选项中,属于营改增范围的有()。
教学具有教育性。
7月と8月はどちら()熱いですか。
最新回复
(
0
)