※ 引述《l17 (国立中山大学)》之铭言： : Which of the following characteristics is not associated with allosteric : regulation of an enzyme's activity? : A) A molecule mimics the substrate and competes for the active site. : B) A naturally occurring molecule stabilizes a catalytically active : conformation. : C) Regulatory molecules bind to a site remote from the active site. : D) Inhibitor and activator molecules may compete with one another. : E) The enzyme usually has a quaternary structure. : 这题答案为什麽是A a是指会有和substrate相似之物质与substrate互相竞争与enzyme结合 但是异位调控顾名思义就是在不同的位置调控enzyme的活性 而这个调控物质有可能是enzyme本身的产物也可能不是 : The symptoms of a certain inherited disorder in humans include respiratory : problems and, in males, sterility. : Which of the following is a reasonable : hypothesis for the molecular basis of this disorder? : A) a defective enzyme in the mitochondria. : B) defective actin molecules in cellular microfilaments : C) defective dynein molecules in cilia and flagella : D) abnormal hydrolytic enzymes in the lysosomes : E) a defective secretory protein : 答案是C 只是里面有cilia ,flagella 看起来就是怪怪的 dynein是cilia和flagella里的一个对於纤毛和鞭毛移动非常重要的一个蛋白 呼吸疾病有可能是因为cili无法活动 无法利用cilia摆动排掉异物 而sterity可能是因为经子flagella无法活动导致不孕 以上是小弟的小小见解 希望对你有帮助....m(_ _)m --

※ 发信站: 批踢踢实业坊(ptt.cc) ◆ From: 120.97.73.229 ※ 编辑: liholan 来自: 120.97.73.229 (11/10 12:17)