[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f6Ckw4vE0gPhb8Rs4L0mQdqWGd2So1UTY1xFS5APU-pE":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2023-09-10 13:31:31",96707529,[8,9,10,11],"离子交换层析","亲和层析","凝胶层析","聚酰胺层析",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},39,"695862afe3c47e5c45e260ea0544a187","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fe3bcf0ff480cf9b7a41101256b6c9a9b.png","生物分离工程","143a20927e314600bbef0bab0aebaa31","","蛋白质分子量的测定可采用( )方法",[21,32,35,44,53,62,71,77,86,95],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],96707528,[25,26,27,28],"离子交换色谱","亲和色谱","凝胶过滤色谱","反相色谱","用于蛋白质分离过程中的脱盐和更换缓冲液的色谱是( )","v1",0,{"answer":33,"createTime":5,"id":6,"options":34,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":36,"createTime":5,"id":37,"options":38,"question":43,"source":30,"type":31},[],96707530,[39,40,41,42],"固定相对各物质的吸附力不同","各物质分子大小不同","各物质在流动相和固定相中的分配系数不同","各物质与专一分子的亲和力不同","凝胶色谱分离的依据是( )",{"answer":45,"createTime":5,"id":46,"options":47,"question":52,"source":30,"type":31},[],96707531,[48,49,50,51],"Sephadex G-200","Sephadex G-150","Sephadex G-100","Sephadex G-50","如果要将复杂原料中分子量大于5000的物质与5000分子量以下的物质分开选用( )",{"answer":54,"createTime":5,"id":55,"options":56,"question":61,"source":30,"type":31},[],96707532,[57,58,59,60],"凝胶颗粒之间空隙的总体积","溶质进入凝胶内部的体积","与该溶质保留时间相对应的流动相体积","溶质从柱中流出时所用的流动相体积","洗脱体积是( )",{"answer":63,"createTime":5,"id":64,"options":65,"question":70,"source":30,"type":31},[],96707533,[66,67,68,69],"对强酸性树脂一般选择氨水、甲醇及甲醇缓冲液等作洗脱剂","弱酸性树脂用稀硫酸、盐酸等作洗脱剂","强碱性树脂用盐酸-甲醇、醋酸等作洗脱剂","若被交换的物质用酸、碱洗不下来,应使用更强的酸、碱","下列关于离子交换层析洗脱说法错误的是( )",{"answer":72,"createTime":5,"id":73,"options":74,"question":76,"source":30,"type":31},[],96707534,[75,51,50,48],"Sephadex G-25","下列哪一种凝胶的孔径最小( )",{"answer":78,"createTime":5,"id":79,"options":80,"question":85,"source":30,"type":31},[],96707535,[81,82,83,84],"酸性","碱性","低浓度盐溶液","高浓度盐溶液","疏水亲和吸附层析通常在( )的条件下进行",{"answer":87,"createTime":5,"id":88,"options":89,"question":94,"source":30,"type":31},[],96707536,[90,91,92,93],"疏水层析柱装柱完毕后,通常要用含有高盐浓度的缓冲液进行平衡","疏水层析是利用蛋白质与疏水性吸附剂之间的弱疏水性相互作用的差别进行分离纯化的层析技术","洗脱后的层析柱再生处理,可用8mol\u002FL尿素溶液或含8mol\u002FL尿素的缓冲溶液洗涤,然后用平衡缓冲液平衡","疏水柱层析分辨率很高、流速慢、加样量小","关于疏水柱层析的操作错误( )",{"answer":96,"createTime":5,"id":97,"options":98,"question":104,"source":30,"type":31},[],96707537,[99,100,101,102,103],"细胞色素C(13370)","肌球蛋白(400000)","过氧化氢酶(247500)","血清清蛋白(68500)","肌红蛋白(16900)","在凝胶过滤(分离范围是5000~400000)中,下列哪种蛋白质最先被洗脱下来( )"]