This presentation is the property of its rightful owner.
Sponsored Links
1 / 32

第 3 节 物质跨膜运输的方式 PowerPoint PPT Presentation


  • 149 Views
  • Uploaded on
  • Presentation posted in: General

第 3 节 物质跨膜运输的方式. 问题探讨:. 1 、什么样的分子能够通过脂双层?什么样的分子不能通过? 2 、葡萄糖不能通过无蛋白质的脂双层,但是小肠细胞能大量吸收葡萄糖, 对此该如何解释?. 3 、观察此图,联系已有知识,你还能提出其他问题吗?能不能就所提出的问题作出尝试性的回答?. 扩散现象:. 一种物质从相对高浓度区域移动到低浓度区域的过程,称为 扩散. 注意:. 自由扩散与渗透作用的区别!. 一、被动运输: 物质顺浓度梯度的扩散方式进出细胞. 如: O2、CO2、N2、 水、苯、乙醇、甘油等 不带电极性小分子或脂溶性。.

Download Presentation

第 3 节 物质跨膜运输的方式

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


3

3


3

1

2

3


3


3

O2CO2N2

1


3

2


3

1.

2.

3.


3


3


3


3

()?

()


3

1.


3

2

1


3

2

3


3

3

1

K+1065K+63K+30Na+1/6


3

2

3


3

4


3

5


3

1

A B C D

2

A

B

C

D


3

312

A B C D

4

A B C D


3

5

A B C D

6

A B

CD


3

7

A B

C D

8

ABCD


3

9

A B C D

10

A B C D


3

11

A B

C D


3

12ABBC

A B

C D


3

13

A B

C D


  • Login