2022安徽九年级英语人教版周报第八单元答案

21.(11分,除标注外,每空1分)(1)内质网coPI(2)细胞膜外细胞膜上加工运输(2分).(3)一定的流动性(4)受体信息传递5)胰岛素合成过程中,囊泡运输出现障碍或者不能准确释放到目的位置(2分)【解析】(1)分析题图可知,甲表示内质网,乙表示高尔基体,丙是囊泡。COPⅡ具膜小泡从内质网运向高尔基体,而COPI具膜小泡是从高尔基体运向内质网,因此,若定位在内质网中的某些蛋白质偶然掺人到高尔基体中,则图中的cOPI可以帮助实现这些蛋白质的回收。(2)由图可知,乙产生的囊泡可以将物质投送到细胞膜外、细胞膜上。物质投送到细胞不同的位置,体现了细胞器乙对集中在其中的蛋白质具有加工、运输的作用。(3)丙(囊泡)与细胞膜融合过程反映了生物膜在结构上具有一定的流动性。(4)该细胞分泌出的蛋白质被运输到靶细胞时,能与靶细胞膜上的特异性受体结合,引起靶细胞的生理活动发生变化,此过程体现了细胞膜具有信息传递(信息交流)的功能。(5)糖尿病的产生原因除了可能是胰岛素合成过程(环节)有问题或者胰岛素作用的靶细胞对胰岛素不敏感外,还有可能是胰岛素合成后囊泡运输出现障碍,胰岛素不能准确释放到目的位置。

第三节One possible version:Paragraph 1On the Christmas of 1995, a drunken lady said some-thing that amoke him and he realized he had found hisdream girl. That was why the guy did not bother to lookfurther when he realized the girl was not coming backRealizing that he had let away someone so important in hislife. he decided to call her immediately. His whole mindwas flooded with fear. He was afraid that she might havefound someone new or no longer had the same feelings anymore. He tried again and again, never giving up. Finallygot through. He expressed his love for her and thewas moved to tears. She was still waiting for him, nevergiving up.Paragraph 2He decided to y to vancouver to join her. It was thehappiest time of their lizes! But their happy time was short-lived.Two days before he was supposed to fly to Vancou-ver. he received a call from her father. She had a head-oncar collision with a drunken driver. Anyone can imagine theheart-broken feelings he had. Why did fate play such cruelames with him? How he hated himself for taking so long togarealize his mistake I That was in 1996

以上就是2022安徽九年级英语人教版周报第八单元答案，更多英语周报答案请关注本网站。