衡水金卷2022_2023学年度高三一轮复习摸底测试卷答案理综三,收集并整理关于衡水金卷2022_2023学年度高三一轮复习摸底测试卷答案理综三得系列试卷及其答案，查看更多衡水金卷先享题摸底卷完整的试卷及其答案加请关注WX公众号：趣找答案

1、衡水金卷2022_2023学年度高三一轮复习摸底测试卷答案理综三

2、衡水金卷先享题2022-2023高三第一轮复习摸底测试卷语文（二））

3、衡水金卷 2022 2023高三一轮复习摸底卷(一)

40.(10分,除标注外,每空2分(1)RNA病毒遗传物质为RNA,含核糖、特有碱基U,一般为单链;DNA病毒遗传物质为DNA,含脱辄核糖,特有碱基T,多为双链(2)单链RNA结构不稳定,容易发生变异3)吸附→注入→合成→组装→释放(五个阶段)(4)分别用含有放射性同位素标记的胸腺嘧啶(T脱氧核苷酸和放射性同位素标记的尿嘧啶(U)核糖核苷酸的培养基培养宿主细胞,再用病毒分别侵染培养出来的宿主细胞,检测病毒的放射性(4分)【解析】(1)RNA病毒的遗传物质为RNA,含核糖、特有碱基U,一般为单链;DNA病毒遗传物质为DNA,含脱氧核糖,特有碱基T双链(2)单链RNA结构不稳定,故容易发生变异。(3)病毒无细胞结构,要在宿主细胞内增殖,增殖过程一般是吸附→注入→合成→组装→释放(五个阶段)(4)RNA病毒遗传物质为RNA,特有碱基U,DNA病毒遗传物质为DNA,特有碱基T,在含有不同放射性标记的宿主细胞内培养一段时间,观察子代病毒A放射性情况即可区分病毒的核酸种类

注意:做题时,先将答案标在试卷上。录音内容结束后,你将有两分钟的时间将试卷上的答案转涂到答题卡上。停顿00’10”现在是听力试音时间。M:Hello.InternationalFriendsClub.CanIhelpyou?W:Oh,hello.IreadaboutyourclubinthepapertodayandIthoughtI’dphonetofindoutabitmore.M:Yes,certainly.Well,weareasortofsocialclubforpeoplefromdifferentcountries.It’squiteanewclubwehaveabout50membersatthemoment,butwearegrowingallthetime.W:Thatsoundsinteresting.ImBritishactually,andIcametoWashingtonaboutthreemonthsago.Imlookingforwaystomeetpeople.Er,whatkindsofeventsdoyouorganize?M:Well,wehavesocialget-togethers,andsportsevents,andwealsohavelanguageevenings.W:Couldyoutellmesomethingaboutthelanguageevenings?M:Yes.EverydayexceptThursdaywehavealanguageevening.Peoplecancomeandpracticetheirlanguages—youknow,overadrinkorsomething.Wehavedifferentlanguagesondifferentevenings.Monday—Spanish;Tuesday—Italian;Wednesday—German;andFriday—French.OnThursdayweusuallyhaveamealinarestaurantforanyonewhowantstocome.W:Well,thatsoundsgreat.IreallyneedtopracticemyFrench.M:OK.Well,ifyoucanjustgivemeyournameandaddress,Illsendyoutheformandsomemoreinformation.Ifyoujoinnowyoucanhavethefirstmonthfree.试音到此结束。听力考试正式开始。停顿oo’10”

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