下列关于生物膜系统在细胞中作用的叙述中，不正确的是（）_刷题宝

题干

下列关于生物膜系统在细胞中作用的叙述中，不正确的是（）

A：细胞膜在细胞与外部环境进行物质运输、能量转换和信息传递的过程中起着决定性作用

B：各种生物膜在功能上互相独立，互不影响

C：生物膜将各种细胞器分隔开，使细胞内能够同时进行多种化学反应

D：许多重要的化学反应都在生物膜上进行

上一题下一题 0.0难度选择题更新时间:2013-05-23 09:26:33

答案(点此获取答案解析）

B

同类题1

某市垃圾处理站每月的垃圾处理成本

y

（元）与月垃圾处理量

x

（吨）之间的函数关系可近似地表示为

y = \frac{1}{2} x^{2} - 200 x + 80000

，求该站每月垃圾处理量为多少吨时，才能使每吨垃圾的平均处理成本最低？最低平均处理成本是多少？

同类题2

读“地球公转示意图”回答问题：

同类题3

“中华紫薇园”景区今年“五一”期间开始营业，为方便游客在园区内游玩休息，决定向一家园艺公司采购一批户外休闲椅，经了解，公司出售两种型号休闲椅，如下表：

	可供使用人数（人/条）	价格（元/条）
长条椅	3	160
弧形椅	5	200

景区采购这批休闲椅共用去56000元，购得的椅子正好可让1300名游客同时使用．

同类题4

My favourite sport
	My favourite sport is basketball, because basketball can make me strong and happy. It can also help me make more friends and learn teamwork. I enjoy playing basketball with my friends. Kobe Bryant is my favorite player. I wish I can play basketball with Kobe Bryant one day.
	Fishing is my favourite sport. I like fishing but I hardly get any fish. I'm not really interested in fishing. I am only interested in sitting in a boat and doing nothing at all. Anyway I think fishing can make me feel very relaxed and comfortable.
	I like swimming because I think it's a funny and easy sport. And swimming is more popular than running. Swimming is good for my health. It can help me keep fit. I joined the swimming club last term. I hope to swim very fast and beautifully. I want to keep my body in a good shape.
	I enjoy jogging with my friends Tommy and Betty. In the early mornings, we often go jogging in the park. Then we are ready for school. At weekends, we sometimes go jogging in the countryside. The more I go jogging, the healthier I will feel.

同类题5

下列句子中划线成语使用有误的一项是（）

小学学科试题库

初中学科试题库

高中学科试题库