[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$flK317C58IngEwF9gZB47cB_EGmv8eEx-xDfRBFvV5UU":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2023-05-23 14:49:35",25524177,[8,9,10,11],"DNA","sugar","lipid","protein",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},79,"ac96c6bd2c19f5d2ab0f3a54e34b7f5a","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fbc5ccb32b515a1de7e10e578779624f1.jpg","Cell Biology 《细胞生物学》一 专业基础课（全英教学）","28f54250ef114f588ffd198caca64040","","The cytoskeleton is an intricate network of ________ filaments that extends throughout the cytoplasm",[21,32,35,44,49,58,65,74,83,92],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],25524176,[25,26,27,28],"GTP","GDP","ATP","ADP","Kinesins and dyneins are microtubule-associated motor proteins that use the energy of ________ hydrolysis to move unidirectionally along microtubules","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},[],25524178,[39,40,41,42],"Actin filaments","Intermediate filaments","Long filaments","Microtubules","________________ are helical polymers of the protein actin. They are flexible structures, with a diameter of about 7 nm, that are organized into a variety of linear bundles, two-dimensional networks, and 3D gels. Although actin filaments are dispersed throughout the cell, they are most highly concentrated in the cortex, the layer of cytoplasm just beneath the plasma membrane",{"answer":45,"createTime":5,"id":46,"options":47,"question":48,"source":30,"type":31},[],25524179,[39,40,41,42],"_______________ are hollow cylinders made of the protein tubulin. They are long and straight and typically have one end attached to a single microtubule-organizing center called a centrosome",{"answer":50,"createTime":5,"id":51,"options":52,"question":57,"source":30,"type":31},[],25524180,[53,54,55,56],"Cyclophosphamide","Colchicine","Doxorubicin","Paclitaxel (Taxol)","_________ binds tightly to free tubulin dimers and prevents their polymerization into microtubules, the mitotic spindle rapidly disappears, and the cell stalls in the middle of mitosis, unable to partition the chromosomes into two groups",{"answer":59,"createTime":5,"id":60,"options":61,"question":64,"source":30,"type":31},[],25524181,[62,54,56,63],"Imatinib (Gleevec)","Irinotecan","_________ binds tightly to microtubules and prevents them from losing subunits. Because new subunits can still be added, the microtubules can grow but cannot shrink",{"answer":66,"createTime":5,"id":67,"options":68,"question":73,"source":30,"type":31},[],25524182,[69,70,71,72],"taxotere (docetaxel)","colchicine","vinblastine","vincristine","Which of the following drug binds and stabilizes microtubules",{"answer":75,"createTime":5,"id":76,"options":77,"question":82,"source":30,"type":31},[],25524183,[78,79,80,81],"actin filaments","intermediate filaments","microtubules","myosin filaments","The cell's polarity is a reflection of the polarized systems of _____________ in its interior, which help to position organelles in their required location within the cell and to guide the streams of vesicular and macromolecular traffic moving between one part of the cell and another",{"answer":84,"createTime":5,"id":85,"options":86,"question":91,"source":30,"type":31},[],25524184,[87,88,89,90],"augmented","balanced","suppressed","promoted","When a cell has differentiated into a specialized cell type, the dynamic instability of its microtubules is often ___________ by proteins that bind to the ends or the sides of the microtubules and protect them against disassembly. The stabilized microtubules then serve to maintain the organization of the differentiated cell",{"answer":93,"createTime":5,"id":94,"options":95,"question":100,"source":30,"type":31},[],25524185,[96,97,98,99],"endoplasmic reticulum (ER)","Golgi apparatus","mitochondria","endosomes","Most differentiated animal cells are polarized; that is, one end of the cell is structurally or functionally different from the other. Cells specialized for secretion have their _________________ positioned toward the site of secretion"]