what is the diffeence between osmosis …

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what is the diffeence between osmosis and diffusion

Posted by Sangita???? Ankita 7 years, 1 month ago

CBSE > Class 09 > Science

2 answers

Gaurav Seth 7 years, 1 month ago

<th>BASIS FOR COMPARISON</th> <th>OSMOSIS</th> <th>DIFFUSION</th>

Meaning	The movement of liquid (solvent) especially water from the higher region concentration to the region of lower concentration, through the semipermeable membrane is called osmosis.	The movement of molecules (solid, liquid or gases) from a region of higher concentration to the lower region concentration, but not necessarily through a semi-permeable membrane is called diffusion.
Semi-permeable membrane	The motion is through the semi-permeable membrane.	The motion is direct and does not require the semi-permeable membrane.
Medium	This process undertakes in the liquid medium.	This process undertakes in any medium (solid, liquid and gases).
Type of diffusing molecule	The movement is basically of solvent (water).	The movement can be in solid, liquid, or gases.
Rate of process	Osmosis is a slow process.	Diffusion is the fast process.
Free-energy	Osmosis is dependent on one solvent to the another for the reduction of free energy.	It is the movement of molecules from the area of their higher free energy to the area of the lower free energy.
Importance	1. Osmosis is important in animals for maintaining the water at the cellular level, also in transporting the nutrients, cell-cell diffusion. 2. In plants, it is helpful in maintaining the turgidity, provides mechanical support, prevents excess water loss, and responsible for absorption of water from the soil.	Diffusion is important in animals at the time of creating energy, during respiration it helps in exchange of gases, while in plants it is also helpful in the process of transpiration and photosynthesis.

3Thank You

Naman Dhandharia 7 years, 1 month ago

1.Osmosis is the process in which only water molecules move from higher higher conc. to lower but in diffusion any substance except water molecules moves from higher conc. to lower

2Thank You

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