What is osmosis? Detailed answer

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What is osmosis? Detailed answer

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What is osmosis?

How does water enter the plant through the roots? How does digested food move from the intestines to the blood vessels? No holes were found either in the roots or in the intestinal walls of the animals. This process is called "osmosis".

When there are two gases in the same volume, they quickly mix. The same thing happens with liquids. For example, a drop of ink will give a faint color to an entire liter of water.

In osmosis, connection occurs through membranes such as the thin walls of plant roots or the intestinal wall. Membranes slow down the connection process, but do not stop it. During osmosis, the membranes of living organisms let through some substances and retain others. This is determined in part by the structure of the substances themselves. Scientists believe that during osmosis, dissolved particles of a substance penetrate between the membrane molecules.

Particles of the solution in contact with the membrane put pressure on it and create the so-called "osmotic pressure". The side with more solute particles also has a higher osmotic pressure, so movement occurs from areas of high pressure to areas of low pressure.

But the movement is carried out in both directions, since the membranes pass substances in both directions. In our body, for example, the membranes of blood vessels constantly pass substances in both directions. Thus, digested food enters the bloodstream and carbon dioxide is excreted from the blood through the lungs.

Author: Likum A.

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