[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fuMdJiSgx70KWyW856GXVVS287kvHlqx1b_8rgHfBg88":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":13,"question":17,"related":18,"source":22,"type":23},[],"2026-01-06 15:31:21",304612596,[8,9,10,11,12],"mRNA的初级转录物为hnRNA","转录后即进行翻译","通常比有功能的RNA片段长","许多核苷酸序列不存在于成熟的RNA","需经修饰加工才具有活性",{"courseId":14,"courseImg":15,"courseName":16},"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","下列关于真核生物初级转录物的叙述,错误的是",[19,24,34,44,54,64,74,84,94,104],{"answer":20,"createTime":5,"id":6,"options":21,"question":17,"source":22,"type":23},[],[8,9,10,11,12],"v1",0,{"answer":25,"createTime":5,"id":26,"options":27,"question":33,"source":22,"type":23},[],304612598,[28,29,30,31,32],"碱基修饰","3'端加 poly尾","去除内含子","5'端加帽子结构","去除外显子","下列不属于真核生物mRNA转录后加工的是",{"answer":35,"createTime":5,"id":36,"options":37,"question":43,"source":22,"type":23},[],304612601,[38,39,40,41,42],"是真核生物转录调控中的反式作用因子","是原核生物 RNA 聚合酶的组分","是真核生物 RNA 聚合酶的组分","本质是 DNA 分子","是真核生物的启动子","下列关于转录因子的叙述,正确的是",{"answer":45,"createTime":5,"id":46,"options":47,"question":53,"source":22,"type":23},[],304612602,[48,49,50,51,52],"开始生成的 mRNA 序列","可转录生成编码区的DNA序列","mRNA中开始被翻译的RNA序列","转录因子结合位点的序列","RNA 聚合酶最初与 DNA 结合的DNA 序列","原核生物启动子是指",{"answer":55,"createTime":5,"id":56,"options":57,"question":63,"source":22,"type":23},[],304612603,[58,59,60,61,62],"5'-TGACGA -3'","5'-ACTGCU -3'","5'-UCGTCA -3'","5'-TCGTCA -3'","5'-ACTGCT -3'","某 RNA 为5'-UGACGA -3',与其对应的 DNA 双链中的编码链为",{"answer":65,"createTime":5,"id":66,"options":67,"question":73,"source":22,"type":23},[],304612604,[68,69,70,71,72],"剪接后的mRNA","不含内含子","有5'帽子结构,但无3'polyA尾","不含外显子","是转录的初级产物,mRNA的前体","下列关于 hnRNA的叙述,正确的是",{"answer":75,"createTime":5,"id":76,"options":77,"question":83,"source":22,"type":23},[],304612605,[78,79,80,81,82],"RNA 编辑","5'-端加上帽子结构","3'-端加多聚腺苷酸尾巴","外显子对应序列去除","内含子去除","下列关于转录后加工修饰反应的叙述,错误的有",{"answer":85,"createTime":5,"id":86,"options":87,"question":93,"source":22,"type":23},[],304612606,[88,89,90,91,92],"tRNA 前体在酶作用下切除5'-末端处和3'-末端处多余的核苷酸","成熟的 tRNA 中含有内含子对应序列","RNA 聚合酶Ⅲ参与 tRNA 前体的生成","IRNA 前体还需要进行化学修饰加工","tRNA3'-末端需加上CCA-0H","下列关于真核生物RNA合成的叙述错误的是",{"answer":95,"createTime":5,"id":96,"options":97,"question":103,"source":22,"type":23},[],304612607,[98,99,100,101,102],"形成端粒结构","形成三叶草的结构","形成发夹结构","在 DNA序列上有终止信号","形成终止复合物","原核生物非依赖Rho因子的转录终止方式是",{"answer":105,"createTime":5,"id":106,"options":107,"question":113,"source":22,"type":23},[],304612608,[108,109,110,111,112],"hnRNA","snRNA","tRNA","mRNA","45sRNA","真核细胞中由RNA聚合酶I催化生成的转录产物是"]