Question

What will happen when a cell is kept in a medium salt solution?​

Answer 1

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When a cell is kept in a medium containing salt solution, water in the cell will move out of the cell and the cell will shrink.

Answer 2

✳ The cell gets crenated or plasmolysed.

✏Due to lesser concentration of water in outside environment than inside the cell, the water flows out of the cell which is also known as Exoosmosis. When this condition occurs with plant cell, they are known to be plasmolysed and when this occurs with animal cell, the cell is said to be crenated.

✏ Here, Concentrated salt solution have more solutes as compared to solvent. Hence, the medium is less concentrated than the cell. Here, Exoosmosis takes place and the cell gets plasmolysed.

☘ Refer to the attachment...

⏹ More Deep concept!!

Everything that is responsible for this phenomenon is known to be Osmosis. Water molecules or solvent molecules can easily move through the selectively-permeable membrane as in Cell membrane. This movement of solvent molecules is known as Osmosis. It is also dependent upon amount of solutes dissolved in water.

$\large{ \rm{Conc. \: of \: water \: \propto \: Conc. \: of \: solutes}}$

More the solute, lesser is the solvent. Depending upon the amounts of solutes dissolved in water, osmosis are of two types:

• When water diffuses into the cell due to the higher concentration outside the cell, it is Endoosmosis.
• When water diffuses out of the cell due to higher concentration inside the cell, it is Exoosmosis.

Depending upon the amount of solutes dissolved in water and the relative concentration, the solutions are of three types:

• When the medium have higher concentration than the cell, the solution is known to be Hypotonic. Here, endoosnosis takes place and the cell swells up.
• When the medium have same concentration as the cell, the solution is isotonic. There is no net movement of water, so the cell remains in its same size.
• When the medium have less concentration than the cell, the solution is hypertonic. Here, the exoosmosis occurs, so the cell gets plasmolysed or crenated.

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