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Diffusion. Osmosis is the diffusion of water across a membrane.

Osmosis is a special type of diffusion. It is the movement of water molecules only from a solution of higher water potential to a solution of lower water potential across a selectively permeable membrane.

The characters in bold indicate the specificity of osmosis as compared to diffusion.

(Biology, chemistry) diffusion of molecules through a semipermeable membrane from a place of higher concentration to a place of lower concentration until the concentration on both sides is equal

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Angela Veum

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Is transpiration a type of osmosis?

Transpiration is not a type of osmosis. Transpiration is the process by which water is absorbed by plant roots and released as vapour through the plant's leaves. Osmosis, on the other hand, is the movement of water molecules across a semi-permeable membrane from an area of higher water concentration to an area of lower water concentration.


Does osmosis require membrane proteins?

No, osmosis is a special type of diffusion in which a water molecule is able to passively transport through a membrane without a protein. Although it is polar, it's extremely small size makes this possible


How is osmosis related to diffusion and what are the key similarities and differences between the two processes?

Osmosis is a type of diffusion that involves the movement of water molecules across a selectively permeable membrane. Both osmosis and diffusion involve the movement of molecules from an area of high concentration to an area of low concentration. The key difference between the two processes is that diffusion refers to the movement of any type of molecule, while osmosis specifically refers to the movement of water molecules.


Passive transport of water is known as?

floating


Why is osmosis special type of diffusion?

Osmosis is considered a specialised type of diffusion because it ONLY involves water passing from a region of high water potential to an area of low water potential through a partially-permeable membrane. Osmosis takes place primarily in our small intestines, where water is absorbed.