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Because it is a differentially permeable membrane so water can fit through but no other large molecules can. it is a passive process. :)
permeable membrane: is a membrane that allows water to pass through the membrane ; the salt water is then left out
If the semi-permeable membrane will change into non-permeable membrane, the items could not enter the cell. Also the osmosis will not occur as it takes place in semi-permeable membrane.
Such a membrane is said to be selectively permeable or semi-permeable.
It is semi permeable [ the cell membrane]
The term differentially permeable refers to a membrane or barrier that allows specific molecules or ions to pass through while preventing others from passing. It is also known as selectively permeable or semipermeable. This property is essential for maintaining the balance of substances within cells and regulating the movement of molecules across biological barriers.
Diffusion across a membrane in biology is referred to as 'osmosis' & osmosis is the process by which solvent molecules move from a region of high conc. to low concentration and this can therefore occur only in one direction at a time for a perticular solution. this is a really smart answer im surprised
A membrane that lets some substances pass through but not others is known as a semipermeable membrane. Other terms that describe this type of membrane are: selectively permeable, partially permeable, or differentially permeable.
selectively permeable or differentially permeable membrane
Diffusion of WATER across a differentially permeable membrane from an area of high concentration to one of low concentration.
Osmosis refers to the flow of water along the water potential through a selectively/differentially permeable membrane/tubing due to a difference in water potential. Thus, it always involves 1) a selectively/differentially permeable membrane 2) difference in water potential(related to concentration gradient) 3)flow of water.
differentialy permeable means, a substance which allow only certain materials to pass through it. For eg., a plant cell wall acts as a differentially permeable membrane which allow only certain materials like water, certain ions etc to pass through it.
a partially permeable membrane allows some molecules or ions to pass through it
1) They both require the presence of a differentially/selectively permeable membrane/tubing. 2) They both refers to the flow of water(ONLY WATER!!!) through a differentially/selectively permeable membrane/tubing . 3) They both require energy. - They both cannot at -273.15 degree Celsius. 4) They will both reach a equilibrium and eventually stop.
1) Osmosis refers to the flow of water along the water potential through a selectively/differentially permeable membrane/tubing due to a difference in water potential. Reverse osmosis refers to the flow of water against the water potential through a selectively/differentially permeable membrane/tubing due to energy gained from the surroundings or an increase in pressure.
1) Osmosis refers to the flow of water along the water potential through a selectively/differentially permeable membrane/tubing due to a difference in water potential. Reverse osmosis refers to the flow of water against the water potential through a selectively/differentially permeable membrane/tubing due to energy gained from the surroundings or an increase in pressure.
a partially permeable membrane allows some molecules or ions to pass through it