2015年高考生物试卷(广东)(解析卷)
一、单项选择题1.下列各组细胞器均具单层膜的是()A液泡和核糖体B中心体和叶绿体C溶酶体和高尔基体D内质网和线粒体【答案】C[来源:学|科|网Z|X|X|K]【考点定位】细胞器的结构。【名师点睛】本题通过简单的题干信息考查细胞器的结构,旨在检测学生对相关知识的识记能力。解决本题关键在于看考生能否熟知细胞器的膜结构。2.关于人胰岛素的叙述,正确的是()①以碳链为基本骨架②与双缩脲试剂反应呈蓝色③促进肝糖原分解④由胰岛B细胞合成、分泌A①③B①④C②③D③④【答案】B【考点定位】蛋白质、血糖调节。【名师点睛】本题考查胰岛素的相关知识,意在考查考生的理解能力和分析能力。解决本题关键在于看考生是否掌握...
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