[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fmGHvukukQO-aXLyfSD6h-o1xYcFvNjedRQDM2LOzqa4":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",166523021,[8,9,10,11],"pyrimidine","purine","DNA double helix 双螺旋","nucleoside",{"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","The three-dimensional structure of doublestranded DNA. ( )",[21,33,39,45,48,54,60,65,70,78],{"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":38,"source":31,"type":32},[],"2024-11-19 17:40:51",166523019,[26,27,28,8],"nullA single-ring nitrogenous base molecule in DNA and RNA. It is complementary to guanine. ( )",{"answer":40,"createTime":5,"id":41,"options":42,"question":44,"source":31,"type":32},[],166523020,[9,28,43,11],"DNA polymerase","An enzyme that brings new DNA triphosphate nucleotides into position for bonding on another DNA molecule. ( )",{"answer":46,"createTime":5,"id":6,"options":47,"question":19,"source":31,"type":32},[],[8,9,10,11],{"answer":49,"createTime":50,"id":51,"options":52,"question":53,"source":31,"type":32},[],"2024-11-19 17:40:52",166523022,[9,28,8,11],"nullA double-ring nitrogenous base molecule in DNA and RNA. It is the complementary base of cytosine. ( )",{"answer":55,"createTime":56,"id":57,"options":58,"question":59,"source":31,"type":32},[],"2024-11-19 17:40:53",166523023,[11,8,9,29],"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":61,"createTime":5,"id":62,"options":63,"question":64,"source":31,"type":32},[],166523024,[9,29,28,8],"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":66,"createTime":5,"id":67,"options":68,"question":69,"source":31,"type":32},[],166523025,[9,8,28,29],"A heterocyclic organic compound, C4N4N2 the fundamental form of pyrimidine bases. Some of these bases are constituents of nucleic acid. ( )",{"answer":71,"createTime":5,"id":72,"options":73,"question":77,"source":31,"type":32},[],166523026,[9,74,75,76],"Thymine","replication fork","Guanine","nullA point at which the two strands of a DNA double helix are unwound and separated during replication. ( )",{"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. ( )"]