• 2022-05-29 问题

    下列不属于向缺电子碳原子重排的反应是 A: Pinacol rearrangement B: Wagner-Meerwein rearrangement C: Benzil rearrangement D: Wolff rearrangement E: Beckmann rearrangement

    下列不属于向缺电子碳原子重排的反应是 A: Pinacol rearrangement B: Wagner-Meerwein rearrangement C: Benzil rearrangement D: Wolff rearrangement E: Beckmann rearrangement

  • 2021-04-14 问题

    Gene rearrangement results in the addition of bases at the joint due to N nucleotide addition. What happens to these bases?

    Gene rearrangement results in the addition of bases at the joint due to N nucleotide addition. What happens to these bases?

  • 2022-07-28 问题

    下面反应的名称为:[img=256x52]1803180b040800b.jpg[/img] A: 克莱森重排(Claisen rearrangement) B: 威廉姆逊醚合成(Williamson ether synthesis) C: 狄尔斯-阿尔德反应(Diels-Alder reaction) D: 傅瑞斯重排( Fries rearrangement)

    下面反应的名称为:[img=256x52]1803180b040800b.jpg[/img] A: 克莱森重排(Claisen rearrangement) B: 威廉姆逊醚合成(Williamson ether synthesis) C: 狄尔斯-阿尔德反应(Diels-Alder reaction) D: 傅瑞斯重排( Fries rearrangement)

  • 2022-05-31 问题

    900 句 T or F (22 words)696 Because the cabin floor was damaged, the pilot requested a delay to takeoff and a rearrangement of the passengers' seats. [音频]

    900 句 T or F (22 words)696 Because the cabin floor was damaged, the pilot requested a delay to takeoff and a rearrangement of the passengers' seats. [音频]

  • 2022-06-07 问题

    The formation of corn color is mainly due to which of the following ways: A: Horizontal gene transfer B: Gene duplication C: Mobile genetic elements D: Exon rearrangement

    The formation of corn color is mainly due to which of the following ways: A: Horizontal gene transfer B: Gene duplication C: Mobile genetic elements D: Exon rearrangement

  • 2022-07-25 问题

    罗森孟德(Rosenmund)反应、霍夫曼(Hofmann)降解反应、贝克曼重排(Beckmann rearrangement)反应、拜耳-维立格(Baeyer-Villiger)都存在基团迁移(重排)过程。

    罗森孟德(Rosenmund)反应、霍夫曼(Hofmann)降解反应、贝克曼重排(Beckmann rearrangement)反应、拜耳-维立格(Baeyer-Villiger)都存在基团迁移(重排)过程。

  • 2022-10-29 问题

    染色体非整倍性改变的机制可能是 A: 染色体断裂及断裂之后的异常重排(rearrangement) B: 染色体易位 C: 染色体倒位 D: 染色体不分离或染色体丢失 E: 染色体核内复制或核内有丝分裂

    染色体非整倍性改变的机制可能是 A: 染色体断裂及断裂之后的异常重排(rearrangement) B: 染色体易位 C: 染色体倒位 D: 染色体不分离或染色体丢失 E: 染色体核内复制或核内有丝分裂

  • 2022-05-28 问题

    Both and heavy chain genes and κ light chain genes______. A: are found near each other on the same chromosome B: begin rearrangement by joining a V to a J region C: will have the extra J regions copied into the primary transcript D: with have the extra upstream VL regions copied into the primary transcript E: have two membrane-spanning exons at the 3’ end of each of the constant regions

    Both and heavy chain genes and κ light chain genes______. A: are found near each other on the same chromosome B: begin rearrangement by joining a V to a J region C: will have the extra J regions copied into the primary transcript D: with have the extra upstream VL regions copied into the primary transcript E: have two membrane-spanning exons at the 3’ end of each of the constant regions

  • 2022-06-06 问题

    During gene rearrangement, the δ gene of the TCR can ________. A: leave out the D region entirely B: wind up with one D region C: incorporate two D regions D: "leave out the D region entirely" and "wind up with one D region" E: "wind up with one D region" and "incorporate two D regions" F: "leave out the D region entirely", "wind up with one D region" and "incorporate two D regions"

    During gene rearrangement, the δ gene of the TCR can ________. A: leave out the D region entirely B: wind up with one D region C: incorporate two D regions D: "leave out the D region entirely" and "wind up with one D region" E: "wind up with one D region" and "incorporate two D regions" F: "leave out the D region entirely", "wind up with one D region" and "incorporate two D regions"

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