What is plasmolysis

Diffusion, osmosis, plasmolysis, deplasmolysis easily explained

diffusion, osmosis, Plasmolysis, Deplasmolysis: These are four cytological terms. This is the cell theory that deals with all living things and a large part of biology and medicine.
All four terms are directly related to each other and can also be associated with each other in all organisms and living things.

The diffusion

Diffusion describes the migration of cell components and contents from a place of high concentration to a place of low concentration. This is a specific process that is also necessary for the excitation cycle in the muscles, among other things. Certain nerve impulses can distribute the mineral gradient accordingly.

Diffusion using the example of coffee

The osmosis

This is the diffusion through a semipermeable membrane. This membrane is semi-permeable and cannot let all substances into the cell and also send them out again. This is very beneficial because the diffusion cannot be controlled without this membrane. However, this also increases the risk of errors occurring.


This is a reduction in the size of a cell. This becomes necessary when a certain nutrient concentration can no longer be maintained. In this case, the cell has to lose water so that the concentration of the substances it contains can be reached again. For this process, the cell membrane can detach itself from the cell wall and the water particles in the cell are stored in this space. The nutrient components remain in the actual cell and maintain the circulation.


The process of plasmolysis reverses and the water re-enters the cell. Cell membrane and cell wall reconnect and can thus re-establish a stable and functioning unit. The cell pressure, which is also known as turgor, is constantly high again. However, this process can only take place if the plasmolysis and the reduced operation have not caused any damage to the cell.