how do substance like SO2 and H2O move by Osmosis through cell membrane
Answers
Answered by
2
Cell membrane is made up of phospholipid molecules. Phospholipid molecules are amphipathic in nature, so their hydrophobic fattyacyl tail portion packed inside tightly by van dar Waals interaction and creates a hydrophobic core.
Now this hydrophobic core of cell membrane only allows hydrophobic molecules and small uncharged polar molecules to pass through them. SO2 molecule is polar because it has a small dipole moment due to electronegativity of oxygen atoms. H2O also a highly polar molecule but very small in size. So H2O and SO2 is very small and able to cross the cell membrane without coming into contact with hydrophobic tails. Thus according to law of thermodynamics this molecules always flow from a high concentration to a low concentration. So this follows the rules of Osmosis because water flows from low concentration(presense of water makes medium less concentrate) to high concentration(where water content is low).
Now this hydrophobic core of cell membrane only allows hydrophobic molecules and small uncharged polar molecules to pass through them. SO2 molecule is polar because it has a small dipole moment due to electronegativity of oxygen atoms. H2O also a highly polar molecule but very small in size. So H2O and SO2 is very small and able to cross the cell membrane without coming into contact with hydrophobic tails. Thus according to law of thermodynamics this molecules always flow from a high concentration to a low concentration. So this follows the rules of Osmosis because water flows from low concentration(presense of water makes medium less concentrate) to high concentration(where water content is low).
Similar questions