Question:
What is osmosis?
What is osmosis?
Updated On: Nov 20, 2023
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Solution and Explanation
The movement of solvent from a region of its high concentration to a region of its low concentration through a semipermeable membrane is called osmosis.
During osmosis, the water molecules (solvent) are free to cross the plasma membrane in both the directions.
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Top Questions on What is a Cell Made Up of? What is the Structural Organisation of a Cell?
- Carry out the following osmosis experiment: Take four peeled potato halves and scoos each one out to make potato cups. One of these potato cups should be made from a boiled potato. Put each potato cup in a trough containing water. Now,
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- Put one teaspoon sugar in cup B
- Put one teaspoon salt in cup C
- Put one teaspoon sugar in the boiled potato cup D. Keep these for two hours. Then observe the four potato cups and answer the following:
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- Why is potato A necessary for this experiment?
- Explain why water does not gather in the hollowed-out portions of A and D.
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Concepts Used:
Osmosis
Osmosis is a passive process and happens without any expenditure of energy. It involves the movement of molecules from a region of higher concentration to lower concentration until the concentrations become equal on either side of the membrane.
There are three different types of solutions:
- Isotonic Solution is one that has the same concentration of solutes both inside and outside the cell.
- Hypertonic solution is one that has a higher solute concentration outside the cell than inside.
- Hypotonic solution is one that has a higher solute concentration inside the cell than outside.