[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f4NdgD7Ar-fErR66lsUJjjzTwz8j_3B-w5crYABmaaaQ":3},{"id":4,"source":5,"question":6,"options":7,"answer":12,"related":13,"type":24,"origin":111,"createTime":26},247039649,"v1","在生理pH条件下,核酸分子在电泳中向正极移动,主要是因为",[8,9,10,11],"碱基的疏水性","戊糖的羟基","磷酸基团携带负电荷","碱基的氨基质子化",[],[14,27,37,47,57,67,77,81,91,101],{"id":15,"source":5,"question":16,"options":17,"answer":22,"related":23,"type":24,"origin":25,"createTime":26},247039643,"在DNA分子中,连接一个核苷酸的脱氧核糖5'位磷酸与下一个核苷酸的脱氧核糖3'位羟基的化学键是",[18,19,20,21],"N-糖苷键","3',5'-磷酸二酯键","氢键","酯键",[],[],0,null,"2025-12-01T19:05:32+08:00",{"id":28,"source":5,"question":29,"options":30,"answer":35,"related":36,"type":24,"origin":25,"createTime":26},247039644,"下列哪种碱基配对之间的氢键数量最多",[31,32,33,34],"A-T (在DNA中)","A-U (在RNA中)","G-C","I-C (I为次黄嘌呤)",[],[],{"id":38,"source":5,"question":39,"options":40,"answer":45,"related":46,"type":24,"origin":25,"createTime":26},247039645,"关于DNA的熔解温度(Tm),下列叙述错误的是",[41,42,43,44],"G-C含量越高,Tm值越高","离子强度越高,Tm值越高","变性是一个爆发式的过程,Tm值代表DNA完全解链的温度","可用于估算DNA的碱基组成",[],[],{"id":48,"source":5,"question":49,"options":50,"answer":55,"related":56,"type":24,"origin":25,"createTime":26},247039646,"下列哪种RNA含量最高,并且是核糖体的结构和功能核心",[51,52,53,54],"mRNA","tRNA","rRNA","miRNA",[],[],{"id":58,"source":5,"question":59,"options":60,"answer":65,"related":66,"type":24,"origin":25,"createTime":26},247039647,"tRNA的二级结构普遍被称为",[61,62,63,64],"发夹结构","三叶草结构","茎环结构","超螺旋结构",[],[],{"id":68,"source":5,"question":69,"options":70,"answer":75,"related":76,"type":24,"origin":25,"createTime":26},247039648,"真核生物染色质的基本结构单位——核小体的核心颗粒中,不包含以下哪种组蛋白",[71,72,73,74],"H1","H2A","H3","H4",[],[],{"id":4,"source":5,"question":6,"options":78,"answer":79,"related":80,"type":24,"origin":25,"createTime":26},[8,9,10,11],[],[],{"id":82,"source":5,"question":83,"options":84,"answer":89,"related":90,"type":24,"origin":25,"createTime":26},247039650,"用于检测RNA的分子杂交技术是",[85,86,87,88],"Southern Blotting","Northern Blotting","Western Blotting","Eastern Blotting",[],[],{"id":92,"source":5,"question":93,"options":94,"answer":99,"related":100,"type":24,"origin":25,"createTime":26},247039651,"关于B-DNA双螺旋结构,下列叙述正确的是",[95,96,97,98],"是左手螺旋","碱基平面与螺旋轴垂直","螺旋直径不均匀","每圈螺旋包含11个碱基对",[],[],{"id":102,"source":5,"question":103,"options":104,"answer":109,"related":110,"type":24,"origin":25,"createTime":26},247039652,"下列哪种DNA结构形式是左手螺旋,并常在嘌呤-嘧啶交替序列中形成",[105,106,107,108],"A-DNA","B-DNA","Z-DNA","C-DNA",[],[],{"courseName":112,"courseImg":113,"workName":114,"workId":115,"count":116,"courseId":117},"默认课程","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","核酸化学20251105163311","work_48310462",90,"53e1d2ef4961cca8eea3e23969ad2cb9"]