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众所周知,生物体与外界环境是統一的有机体,經常不断地同化外界生活条件为有机体組成部分,而又不断地將自己生命活动过程中所产生的廢物排泄到周圍环境中去。那么作为生活細胞决不可缺少的一些水份、养科究竟是怎样从环境进入細胞的呢?又怎样从生物体的这一部分轉移到另一部分的呢?这个过程主要和渗透作用有关,所以在这里我想着重的来介紹一下渗透作用以及与滲透作用有关的一些問題。一、什么叫扩散,滲透一切物質,尤其是易于移动的物質,如气体和液体,在介質中由于分子运动使該物質分子从濃的地方向稀的地方移动,致使濃度均衡的过程,便称之为扩
As we all know, living organisms and the external environment are a unified organism, and they constantly assimilate the external living conditions into the components of the organism, and constantly discharge the waste generated during their own life activities into the surrounding environment. Then, how do some of the water and nutrients that are essential to living cells enter the cell from the environment? How does this move from one part of the organism to another? This process is mainly related to infiltration, so it is here. I would like to focus on the infiltration and some problems related to infiltration. First, what is called diffusion, infiltration of all substances, especially substances that are easy to move, such as gases and liquids, are called in the medium due to molecular movements that cause the molecules of the material to move from the densely dilute places to a process of equilibrium concentration. The expansion