[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$faCWMjrvbRg8UmuTT_VrsEM2y7p2tsG2_sirBTGp7QdA":3},{"id":4,"source":5,"question":6,"options":7,"answer":8,"related":9,"type":121,"origin":122,"createTime":129},321279019,"v1","Newborn infants sometimes develop jaundice because they have not yet produced enough glucuronyl bilirubin transferase to process their bilirubin",[],[],[10,23,34,45,56,67,78,89,100,110],{"id":11,"source":5,"question":12,"options":13,"answer":18,"related":19,"type":20,"origin":21,"createTime":22},185057290,"_________________ are derived from 3-phosphoglycerate",[14,15,16,17],"Ser, Gly, and Cys","Ser, Gly, and Glu","Thr, Gly, and Cys","Ser, Glu, and Cys",[],[],0,null,"2025-04-28T18:41:55+08:00",{"id":24,"source":5,"question":25,"options":26,"answer":31,"related":32,"type":20,"origin":21,"createTime":33},185057291,"______________ are the nitrogen donors in a wide range of biosynthetic reactions",[27,28,29,30],"Glu and Asn","Glu and Gly","Glu and Gln","Glu and Ala",[],[],"2025-04-28T18:41:56+08:00",{"id":35,"source":5,"question":36,"options":37,"answer":42,"related":43,"type":20,"origin":21,"createTime":44},185057292,"Certain amino acids or parts of amino acids are incorporated into the structure of purines and pyrimidines, and in one case, part of a purine ring is incorporated into an amino acid (____)",[38,39,40,41],"Ala","His","Tyr","Trp",[],[],"2025-04-28T18:41:58+08:00",{"id":46,"source":5,"question":47,"options":48,"answer":53,"related":54,"type":20,"origin":21,"createTime":55},185057293,"The nitrogen cycle is short-circuited by a group of bacteria that promote anaerobic ammonia oxidation, or anammox, a process that converts ammonia and nitrite to N2. As much as ___________ of the NH3-to-N2 conversion in the biosphere may occur through this pathway, which went undetected until the 1980s",[49,50,51,52],"30% to 50%","40% to 60%","50% to 70%","60% to 80%",[],[],"2025-04-28T18:42:00+08:00",{"id":57,"source":5,"question":58,"options":59,"answer":64,"related":65,"type":20,"origin":21,"createTime":66},185057295,"The availability of fixed nitrogen, an essential nutrient, may have limited the size of the primordial biosphere. As early cells acquired a capacity to fix atmospheric nitrogen, the biosphere expanded. Evidence for biological nitrogen fixation has been found in sedimentary rocks more than ___ billion years old",[60,61,62,63],"2","2.5","3","3.5",[],[],"2025-04-28T18:42:03+08:00",{"id":68,"source":5,"question":69,"options":70,"answer":75,"related":76,"type":20,"origin":21,"createTime":77},185057296,"The first important product of nitrogen fixation is _______, which can be used by all organisms either directly or after its conversion to other soluble compounds such as nitrites, nitrates, or amino acids",[71,72,73,74],"NO2ˉ","ammonia","NO3ˉ","NH4+",[],[],"2025-04-28T18:42:05+08:00",{"id":79,"source":5,"question":80,"options":81,"answer":86,"related":87,"type":20,"origin":21,"createTime":88},185057297,"The N≡N triple bond in N2 is very stable, with a bond energy of _____ kJ\u002Fmol. Nitrogen fixation therefore has an extremely high activation energy, and atmospheric nitrogen is almost chemically inert under normal conditions",[82,83,84,85],"730","830","930","1,030",[],[],"2025-04-28T18:42:06+08:00",{"id":90,"source":5,"question":91,"options":92,"answer":97,"related":98,"type":20,"origin":21,"createTime":99},185057298,"The reduction of nitrogen to ammonia is an exergonic reaction: N2 + 3H2 ® 2NH3 DG° = _____ kJ\u002Fmol",[93,94,95,96],"–23.5","–33.5","–43.5","–50.5",[],[],"2025-04-28T18:42:07+08:00",{"id":101,"source":5,"question":102,"options":103,"answer":108,"related":109,"type":20,"origin":21,"createTime":99},185057299,"Ammonia is produced industrially by the Haber process (named for its inventor, Fritz Haber), which requires temperatures of _________ and nitrogen and hydrogen at pressures of tens of thousands of kilopascals (several hundred atmospheres) to provide the necessary activation energy",[104,105,106,107],"200 to 300°C","300 to 400°C","400 to 500°C","500 to 600°C",[],[],{"id":111,"source":5,"question":112,"options":113,"answer":118,"related":119,"type":20,"origin":21,"createTime":120},185057300,"The energy used to maintain living systems relies on the generation of proton gradients across membranes. Electrons derived from a reduced substrate are made available to electron carriers in membranes and pass through a series of electron transfers to a final electron acceptor. As a byproduct of this process, protons are released on one side of the membrane, generating the transmembrane proton gradient. The proton gradient is used to synthesize ATP or to drive other energy-requiring processes. For all eukaryotes, the reduced substrate is generally a carbohydrate (glucose or pyruvate) or a fatty acid and the electron acceptor is ________",[114,115,116,117],"nitrogen","oxygen","carbon","sulphur",[],[],"2025-04-28T18:42:08+08:00",3,{"courseName":123,"courseImg":124,"workName":125,"workId":126,"count":127,"courseId":128},"默认课程","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","Test 22 - Lecture 22","0bd24cc9486d41ebb31c7060138a72af",135,"53e1d2ef4961cca8eea3e23969ad2cb9","2026-03-08T16:10:05+08:00"]