[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fMKuxWU3XCh5EZkEUOkAsX6kGvrkZzLMpIIsF1-mCbAs":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":29,"type":30},[],"2025-11-14 12:02:36",166523024,[8,9,10,11],"purine","thymine","guanine","pyrimidine",{"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","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. ( )",[21,31,37,44,50,56,62,65,70,78],{"answer":22,"createTime":23,"id":24,"options":25,"question":28,"source":29,"type":30},[],"2024-11-19 17:40:50",166523018,[26,27,10,9],"adenine","cytosine","A purine base that is an essential constituent of the nucleic acids and also of such coenzymes as NAD and FAD.( )","v1",0,{"answer":32,"createTime":33,"id":34,"options":35,"question":36,"source":29,"type":30},[],"2024-11-19 17:40:51",166523019,[26,27,10,11],"nullA single-ring nitrogenous base molecule in DNA and RNA. It is complementary to guanine. ( )",{"answer":38,"createTime":5,"id":39,"options":40,"question":43,"source":29,"type":30},[],166523020,[8,10,41,42],"DNA polymerase","nucleoside","An enzyme that brings new DNA triphosphate nucleotides into position for bonding on another DNA molecule. ( )",{"answer":45,"createTime":5,"id":46,"options":47,"question":49,"source":29,"type":30},[],166523021,[11,8,48,42],"DNA double helix 双螺旋","The three-dimensional structure of doublestranded DNA. ( )",{"answer":51,"createTime":52,"id":53,"options":54,"question":55,"source":29,"type":30},[],"2024-11-19 17:40:52",166523022,[8,10,11,42],"nullA double-ring nitrogenous base molecule in DNA and RNA. It is the complementary base of cytosine. ( )",{"answer":57,"createTime":58,"id":59,"options":60,"question":61,"source":29,"type":30},[],"2024-11-19 17:40:53",166523023,[42,11,8,9],"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":63,"createTime":5,"id":6,"options":64,"question":19,"source":29,"type":30},[],[8,9,10,11],{"answer":66,"createTime":5,"id":67,"options":68,"question":69,"source":29,"type":30},[],166523025,[8,11,10,9],"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":29,"type":30},[],166523026,[8,74,75,76],"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":29,"type":30},[],166523027,[26,9,10,27],"nullA single-ring nitrogenous base molecule of DNA but not RNA. It is complementary to adenine. ( )"]