[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f59Fv0mzSzbJ1FZqfmGaYYFKMVXaNTJbg6zN6oWiucm8":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":24,"type":25},[],"2025-12-10 02:20:12",257635206,[8,9,10,11],"碱基","核苷酸","核糖","核苷",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},27,"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","work_45415461","单元检测","核酸的基本组成单位是",[21,26,35,44,53,62,71,81,91,100],{"answer":22,"createTime":5,"id":6,"options":23,"question":19,"source":24,"type":25},[],[8,9,10,11],"v1",0,{"answer":27,"createTime":5,"id":28,"options":29,"question":34,"source":24,"type":25},[],257635207,[30,31,32,33],"N-9","N-7","N-3","N-1","嘌呤核苷酸中参与糖苷键形成的嘌呤环中的原子是",{"answer":36,"createTime":5,"id":37,"options":38,"question":43,"source":24,"type":25},[],257635208,[39,40,41,42],"B型双螺旋结构最稳定","天然DNA分子中不存在左手螺旋结构","反向互补双链围绕同一轴形成DNA右手双螺旋","氢键和疏水作用力共同维持双螺旋稳定","关于DNA二级结构的描述,错误的是",{"answer":45,"createTime":5,"id":46,"options":47,"question":52,"source":24,"type":25},[],257635209,[48,49,50,51],"rRNA","mRNA","tRNA","snRNA","1.ncRNA不包括",{"answer":54,"createTime":5,"id":55,"options":56,"question":61,"source":24,"type":25},[],257635210,[57,58,59,60],"H1、H2A、H3、H4各两分子","H2A、H2B、H3、H4各两分子","H1、H2、H3各两分子","H2、H3、H4各两分子","组成核小体核心颗粒的蛋白质包括",{"answer":63,"createTime":5,"id":64,"options":65,"question":70,"source":24,"type":25},[],257635211,[66,67,68,69],"Tm与DNA分子的碱基组成有关","与碱基含量无关","在Tm时,DNA分子内50%的氢键被打开","Tm与DNA分子大小有关","关于DNA的Tm值叙述,不正确的是",{"answer":72,"createTime":5,"id":73,"options":74,"question":80,"source":24,"type":25},[],257635212,[75,76,77,78,79],"组成核酸的基本单位是三磷酸核苷","组成DNA和RNA的戊糖相同","组成DNA和RNA的碱基是相同的","DNA的二级结构为&alpha;-螺旋","以上都不对","关于核酸分子组成下列哪项是正确的",{"answer":82,"createTime":5,"id":83,"options":84,"question":90,"source":24,"type":25},[],257635213,[85,86,87,88,89],"碱基配对","某个核苷酸","某种核苷","磷酸戊糖骨架","碱基顺序中","生物体的遗传信息储存在DNA的什么部位",{"answer":92,"createTime":5,"id":93,"options":94,"question":99,"source":24,"type":25},[],257635214,[11,95,96,97,98],"磷酸戊糖","单核苷酸","多核苷酸","以上都不是","下列哪个是核酸的基本结构单位",{"answer":101,"createTime":5,"id":102,"options":103,"question":109,"source":24,"type":25},[],257635215,[104,105,106,107,108],"3' -磷酸脱氧核糖","5' -磷酸脱氧核糖","3' -磷酸核糖","2' -磷酸核糖","5' -磷酸核糖","组成DNA分子的磷酸戊糖是"]