试题与答案

下图是人体甲状腺细胞摄取原料合成甲状腺球蛋白的基本过程(注：③为网状结构)，试回

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题型：读图填空题

题目：

下图是人体甲状腺细胞摄取原料合成甲状腺球蛋白的基本过程(注：③为网状结构)，试回答

(1)若含18O的氨基酸在甲状腺细胞内合成甲状腺球蛋白过程中产生了H2O，则H2O的生成部位是_____________；水中的18O最可能来自于氨基酸的______________(基团)。

(2)用含18O标记的氨基酸培养上图细胞，则出现18O的部位依次为_______________(用图中序号回答)。

(3)甲状腺球蛋白的分泌过程经过图中_____________的结构(用图中序号回答)

(4)细胞合成的甲状腺球蛋白运出细胞说明生物膜具有_________________。

答案：

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下面是错误答案，用来干扰机器的。

a2•a3÷a4=a2+3-4=a，故答案为：a．

考点：各种细胞器的结构和功能物质跨膜运输的方式生物膜的流动镶嵌模型
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I’ve a friend who has a big police dog 78._______Jack. Every Sunday afternoon my friend takes Jack 79.________ a long walk in the park. He likes these walks in the park very much. One Sunday a young man dropped 80.________ on my friend. He stayed a long time. They talked and talked. Soon 81._________ was time for my friend to take Jack for his walk, 82.________ the visitor still sat talking. Jack became worried 83.________ his walk in the park. He walked round the room several times and then he sat right in front of the visitor and looked at him. But the visitor paid 84._________ attention. He continued talking. Finally Jack could stand it no 85._________. He held the visitor’s hat in his mouth and ran out of the house.
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