TODTEMPLE01
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What (exactly) is osmosis? Thanks
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3317752
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net movement of water molecules along a semi permeable membrane from an area of high concentration to an area of low concentration.
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Wikia
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The exact definition I've been taught is:

Osmosis is the movement of water from a less concentrated solution to a more concentrated solution through a partially permeable membrane.
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rubbishatgcse
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Osmosis is diffusion , but only regarding water. It is when water molecules move from an area of HIGH concentration into an area of LOW concentration.

Think of it like when you poke a hole into a bag of sand, the sand is moving from a place with a high amount of sand into a place with a low amount of sand.

But remember Osmosis is to do with water so an example is when water gets absorbed by root hair cells: there is a HIGH concentration of water molecules outside the soil while there is a LOW concentration of water inside the root hair cell so the water moves to the area with the LOWER concentration.
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username3025666
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Hi,Osmosis is the movement of water from a high water concentration to a low water concentration through a partially permeable membrane. Particles will move in both directions but the overall movement of the water molecules would be to the side with a lower water concentration and a higher solute concentration.Examples of solutes could be glucose for example.The reason for osmosis is because we trying to achieve equilibrium. What this means is, we want the concentrations of water and solutes on either side of the partially permeable membrane to be the 'same'.Hope this helps.
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rubbishatgcse
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(Original post by Rubydiamond3131)
Hi,Osmosis is the movement of water from a high water concentration to a low water concentration through a partially permeable membrane. Particles will move in both directions but the overall movement of the water molecules would be to the side with a lower water concentration and a higher solute concentration.Examples of solutes could be glucose for example.The reason for osmosis is because we trying to achieve equilibrium. What this means is, we want the concentrations of water and solutes on either side of the partially permeable membrane to be the 'same'.Hope this helps.
Hi, does diffusion and active transport work to reach equilibrium as well?
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?Hannah?
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osmosis is the net diffusion of water across a partially permeable membrane from a high water potential to a low water potential.
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?Hannah?
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(Original post by shitatgcse)
Hi, does diffusion and active transport work to reach equilibrium as well?
yes, they do!
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username3025666
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(Original post by shitatgcse)
Hi, does diffusion and active transport work to reach equilibrium as well?
Yes they do.
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