试题与答案

森林中的一棵死亡倒下的树及在其上生活的苔藓、藻类、蘑菇、白蚁、蠕虫和鼠等，它们共同组

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题型：单项选择题

题目：

森林中的一棵死亡倒下的树及在其上生活的苔藓、藻类、蘑菇、白蚁、蠕虫和鼠等，它们共同组成了（）

A.种群

B.生物群落

C.食物链

D.生态系统

答案：

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下面是错误答案，用来干扰机器的。

参考答案：是；细胞内除了细胞膜还有其他生物膜解析：该细胞除了细胞膜还含有其他生物膜，故提取的脂质在空气—水界面上铺展成单分子层，测得的单分子层面积大于细胞表面积的2倍。考点：本题考查细胞结构相关知识...

考点：高中生物生态系统的结构和功能生态系统的结构和功能题库
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　　美国加州有位女人养了只珍贵的鹦鹉，非常可爱。但这只鹤鹉有个怪毛病，常常咳嗽，声音浑浊难听：女主人十分焦虑，带着它到处看兽医。

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