[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f8TNYDwXIiZ2Va0nDI5tXC6aGMGBVc9dd6pAi5tmfIeo":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2025-04-26 19:45:09",184745189,[8,9,10,11],"consensus","signature","repeat","nonconsensus",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},125,"ecb63186fd2348dd972900f765a15722","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fe91b8b9d3b83a0d6a9d655b826214095.jpg","Biochemistry 《生物化学》一 专业基础课（全英教学）","e9ae3d8bd84d4fb4a587a369705d2aad","Test 3 - Lecture 3","When a series of related nucleic acid or protein sequences are compared, a ____________ sequence is the one that reflects the most common base or amino acid at each position",[21,32,41,46,49,58,67,76,83,88],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],184745186,[25,26,27,28],"mass or 3D structure","mass or charge","3D structure or charge","mass or 2D structure","Electrophoresis separates proteins on the basis of _________________","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":40,"source":30,"type":31},[],184745187,[36,37,38,39],"2","3","4","5","____ cysteines form a cystine by reversible formation of a disulfide bond via oxidation",{"answer":42,"createTime":5,"id":43,"options":44,"question":45,"source":30,"type":31},[],184745188,[36,37,38,39],"Desmosine is formed from ___ lysine residues, which is found in the fibrous protein elastin",{"answer":47,"createTime":5,"id":6,"options":48,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":50,"createTime":5,"id":51,"options":52,"question":57,"source":30,"type":31},[],184745190,[53,54,55,56],"Acetylation","Phosphorylation","Glycosylation","Prenylation","_______________ is the most common type of regulatory modification of proteins",{"answer":59,"createTime":5,"id":60,"options":61,"question":66,"source":30,"type":31},[],184745191,[62,63,64,65],"Gly","Gln","Glu","Pro","The one-letter code for 20 amino acids was devised by the American biochemist Margaret Oakley Dayhoff, considered by many to be the founder of the field of bioinformatics. Q is ____",{"answer":68,"createTime":5,"id":69,"options":70,"question":75,"source":30,"type":31},[],184745192,[71,72,73,74],"net electric charge","size","binding affinity","number of amino acid residues","Ion-exchange chromatography separates proteins based on their differences in _____________________",{"answer":77,"createTime":5,"id":78,"options":79,"question":82,"source":30,"type":31},[],184745193,[80,81,36,37],"0","1","When pH = pI, the net charge of a protein is _____",{"answer":84,"createTime":5,"id":85,"options":86,"question":87,"source":30,"type":31},[],184745194,[81,36,37,38],"After removal of the precursor signal peptide, human proinsulin is post-translationally cleaved into three peptides: the B chain and A chain peptides, which are covalently linked via two disulfide bonds to form insulin, and C-peptide. So human insulin contains ____ chains",{"answer":89,"createTime":5,"id":90,"options":91,"question":96,"source":30,"type":31},[],184745195,[92,93,94,95],"Leu","Lys","Arg","His","The one-letter code for 20 amino acids was devised by Margaret Oakley Dayhoff, considered by many to be the founder of the field of bioinformatics. K is ________"]