大肠杆菌与普通动植物细胞的结构主要区别

2025-03-23 18:25:20
推荐回答(3个)
回答(1):

1.大肠杆菌没有真正完整的细胞核,只有一个拟核而且拟核外没有核膜包围
2.大肠杆菌的拟核是一个裸露的环状DNA分子,没有与蛋白质形成染色体结构
3.大肠杆菌的细胞器只有游离的核糖体,没有其他复杂的细胞器(如线粒体、叶绿体、内质网、溶酶体、高尔基体、中心体....)
4.大肠杆菌的细胞壁成分主要为肽聚糖(而植物的细胞壁主要成分为纤维素和果胶)

回答(2):

大肠杆菌是原核

普通动植物视为真核

实际上就是原核细胞和真核细胞的区别

比如原核没有线粒体,核区是没有核膜包裹的细胞核

回答(3):

大肠杆菌有遗传物质集中的区域,却没有成型的细胞核。

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