What is osmosis? - ProProfs Discuss
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What is osmosis?

This question is part of Grade 8 Science - Cells
Asked by Maryrosiee, Last updated: Jul 04, 2020

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5 Answers

K. Tanaka

K. Tanaka, Librarian, Oklahoma

Answered May 06, 2020

Osmosis is the net movement of solvent or diffusion of water through a semipermeable membrane such as a living cell into a region of higher solute concentration in a way that the solutes are equalized on the concentration of both sides.

Osmosis is an important aspect of the biological system as it acts as a transporter of water in and out of the cells.

Osmosis was first documented in 1748 by Jean-Antoine Nollet on the construction of Egyptian pyramids; the word Osmosis was craved from Greek words (Endon, which means within, EXO, which means outer and Osmos which means push).

This was done by Rene Joachim Henri Dutrochet, a French physician. It was later thoroughly studied by a German plant physiologist Wilhelm Pfeiffer in 1877.




Answered Feb 19, 2020

Osmosis is defined as the net movement of SOLVENT molecules from a region of lower solute concentration to a region of higher solute concentration through a semi-permeable membrane. Only the solvent, which is water in most cases moves, the solute particles do not move. Most people often replace osmosis for diffusion and vice versa.

Diffusion, on the other hand, is the movement of VAPOR and other substances from regions of high concentration towards regions with lower concentrations. No semi-permeable membrane is needed for diffusion to take place. Although both osmosis and diffusion aim to equalize the concentration of the solution in a membrane, they are still not the same.



Here to relax my mind a bit

T. ADAMS, Senior Executive, MBA, Andalusia

Answered Sep 18, 2019

The correct answer to this question is Diffusion selectively permeable membrane. Osmosis occurs when water moves through the membrane of a cell. Another part of osmosis is water potential. This occurs when water moves in and out of the cell.

There are two types of water potentials, which are high potential and low potential. Pure water has a high water potential, while soluted water has a low potential. Osmosis is how plants take in water and the water is taken in through the plants roots. Our body also goes through osmosis and the process is intrical to keeping our kidneys clean.


John Adney

John Adney

Answered Sep 21, 2017

Osmosis semi permeable membrane

That's what I think!!!




Answered Sep 17, 2017

Diffusion selectively permeable membrane

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