[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fYJzXNIrF4QBTDORH5VSQezdaObAhgoF1dg2yrMj3iFI":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":31,"type":32},[],"2025-11-14 12:02:36",166523026,[8,9,10,11],"purine","Thymine","replication fork","Guanine",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},10,"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","5563b0bc78ed4831a731921df9bb665e","T5","nullA point at which the two strands of a DNA double helix are unwound and separated during replication. ( )",[21,33,40,47,53,59,65,70,75,78],{"answer":22,"createTime":23,"id":24,"options":25,"question":30,"source":31,"type":32},[],"2024-11-19 17:40:50",166523018,[26,27,28,29],"adenine","cytosine","guanine","thymine","A purine base that is an essential constituent of the nucleic acids and also of such coenzymes as NAD and FAD.( )","v1",0,{"answer":34,"createTime":35,"id":36,"options":37,"question":39,"source":31,"type":32},[],"2024-11-19 17:40:51",166523019,[26,27,28,38],"pyrimidine","nullA single-ring nitrogenous base molecule in DNA and RNA. It is complementary to guanine. ( )",{"answer":41,"createTime":5,"id":42,"options":43,"question":46,"source":31,"type":32},[],166523020,[8,28,44,45],"DNA polymerase","nucleoside","An enzyme that brings new DNA triphosphate nucleotides into position for bonding on another DNA molecule. ( )",{"answer":48,"createTime":5,"id":49,"options":50,"question":52,"source":31,"type":32},[],166523021,[38,8,51,45],"DNA double helix 双螺旋","The three-dimensional structure of doublestranded DNA. ( )",{"answer":54,"createTime":55,"id":56,"options":57,"question":58,"source":31,"type":32},[],"2024-11-19 17:40:52",166523022,[8,28,38,45],"nullA double-ring nitrogenous base molecule in DNA and RNA. It is the complementary base of cytosine. ( )",{"answer":60,"createTime":61,"id":62,"options":63,"question":64,"source":31,"type":32},[],"2024-11-19 17:40:53",166523023,[45,38,8,29],"nullA purine or pyrimidine base attached to ribose or deoxyribose. The nucleosides commonly found in DNA and RNA are: cytidine, cytosine deoxyriboside, thymidine, uridine, adenosine, adenine deoxyriboside, guanosine, and guanine deoxyriboside. Note that thymidine is a deoxyriboside and cytidine, uridine, adenosine,and guanosine are ribosides. ( )",{"answer":66,"createTime":5,"id":67,"options":68,"question":69,"source":31,"type":32},[],166523024,[8,29,28,38],"One of a group of nitrogenous bases whose parent compound has the formula shown. The two most abundant purines are adenine and guanine, which are constituents of nucleic acids and coenzymes. ( )",{"answer":71,"createTime":5,"id":72,"options":73,"question":74,"source":31,"type":32},[],166523025,[8,38,28,29],"A heterocyclic organic compound, C4N4N2 the fundamental form of pyrimidine bases. Some of these bases are constituents of nucleic acid. ( )",{"answer":76,"createTime":5,"id":6,"options":77,"question":19,"source":31,"type":32},[],[8,9,10,11],{"answer":79,"createTime":5,"id":80,"options":81,"question":82,"source":31,"type":32},[],166523027,[26,29,28,27],"nullA single-ring nitrogenous base molecule of DNA but not RNA. It is complementary to adenine. ( )"]