首页
财务会计
医药卫生
金融经济
考公考编
外语考试
学历提升
职称考试
建筑工程
IT考试
其他
登录
财务会计
根据下面资料,回答题 I′ve often wondered how exa
根据下面资料,回答题 I′ve often wondered how exa
恬恬
2019-12-17
53
问题
根据下面资料,回答题 I′ve often wondered how exactly sleep, or lack of it, can have such an awful effect on our bodies and, guess what, how much we sleep switches good genes on and bad genes off. In the first half of 2013, the Sleep Research Centre at the University of Surrey found a direct link between hours spent sleeping and genes. Every cell in our bodies carries genetic instructions in our DNA that act as a kind of operating handbook. However, each cell only "reads" the part of this handbook it needs at any given moment. Can sleep affect how a gene reads instructions It′s a question asked by Professor Derk-Jan Dijk at the University of Surrey. He set up an experiment and asked his volunteers to spend a week sleeping around seven and a half hours to eight hours a night and the next sleeping six and a half to seven hours. Blood samples were taken each week to compare which genes in blood cells were being used during the long and short nights. The results were rather surprising. Several hundred genes changed in the amount they were being used, including some that are linked to heart disease, cancer, and Type 2 diabetes. Genes to do with cell repair and replacement were used much less. Sleep restriction (six and a half to seven hours a night) changed 380 genes. Of these,220 genes were down regulated (their power was reduced), while 160 were up regulated (their power was increased). Those affected included body-clock genes which are linked to diabetes. One of the most downgraded genes is that which has a role in controlling insulin and is linked to diabetes and insomnia. The most upgraded gene is linked to heart disease. So changing sleep by tiny amounts can upgrade or downgrade genes that can influence our health and the diseases we suffer from when we sleep too little. The important message is that getting close to eight hours of sleep a night can make a dramatic difference to our health in just a few days through the way it looks after our genes. Which of the following can be inferred from the findings of the sleep research 查看材料
选项
A.When there is a sleep restriction, genes to do with cell repair and replacement function less.B.In a sleep, several hundred genes change in the amount. The more changes, the worse results.C.When genes are up regulated, they do good to health; when genes arc down regulated, they do harm to health.D.Eight hours of sleep a day can be beneficial to our health in that it looks after our genes.
答案
D
解析
推断题。根据文章最后一段“The important message is that getting close to eight hours of sleep a night Can make a dramatic difference to our health in just a few days through the way it looks after our genes.”可知,8个小时的睡眠模式对人体是非常有益的,因为这样的睡眠时间能很好地照料我们的基因,D项是此段话的同义表达,故选D。A项属于原文的直接信息,不用推断。B项说法错误,改变越多,并不一定意味着结果越差,要看这种改变是导致基因活性降低还是上升。文章第五段中提到,在下调程度最高的基因中,有一种负责控制胰岛素合成的基因与糖尿病和失眠密切相关,而上调程度最高的基因则与心脏病有关联,可见基因下调和上调均可能对健康有害,故C项说法错误。
转载请注明原文地址:https://ti.zuoweng.com/ti/tcUsKKKQ
相关试题推荐
结核分枝杆菌根据其代谢特点分
关于食管下段括约肌(LES)的结构与功能,下面哪些说法是不正确的
某家工厂食堂,工人就餐1小时后,陆续出现唇、指甲以及全身皮肤青紫等症状。根据中毒
男性,45岁,体检发现尿糖阳性,根据下列哪一项检查对诊断糖尿病最有意义
下面关于CURB-65评分的内容,哪项不正确
把下面的六个图形分为两类,使每一类图形都有各自的共同特征或规律,分类正确的一项
2006—2014年我国能源消费总量及构成 根据材料,下列表述正确的是:
根据美国加州大学圣迭戈分校的最新研究结果显示,一个人孤独不在于到底拥有多少亲密
2006—2014年我国能源消费总量及构成 根据材料,下列表述正确的是:
根据美国加州大学圣迭戈分校的最新研究结果显示,一个人孤独不在于到底拥有多少亲密的
随机试题
对固定资产计提折旧涉及对固定资产预计净残值和使用寿命进行分析和判断,带有一定的不
呋喃香豆素大多显示的荧光颜色为 A、蓝色 B、淡绿色 C、紫色 D、红色
按结构的反应不同,荷载可分为()。
荆芥生用不具有的功效是()
配伍体现了“培土生金”治法的是
关于神经症,正确的叙述是 A.多数伴有人格障碍 B.心理因素是其主要发病原因
肺脏严重淤血时不出现的改变是A.合并肺部感染B.透明膜形成C.肺泡出血D.肺泡水肿E.肺泡内含铁血黄素增加
蒙医用药剂量较明确而恒定,按成人计,散剂应A.每次1.5-3g,—日2~3次B.每次3?5g,一日3?4次C.每次5?10g,—日1?2次D.每次5
下列隧道监控量测位移管理等级为Ⅱ级的是()。A.实测位移U大于2/3允许位移U2BB.地表出现开裂、坍塌C.渗水压力或水流量突然增大D.
当工程网络计划的计算工期小于计划工期时,则()。A.单代号网络计划中关键线路上相邻工作的时间间隔为OB.双代号网络计划中关键线路上工作的持续时间之和等于计划