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Question

What is osmosis? Is it a special type of diffusion?


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Solution

Osmosis:

  • “Osmosis is the term used to refer specifically the diffusion of water across a differentially or selectively permeable membrane.”
  • Yes, osmosis is a special type of diffusion because in both cases there is a movement of particles from a higher concentration region to a lower concentration region.
  • In the process of osmosis, particle movement takes place from the region of higher concentration to lower concentration via the semi-permeable membrane.

Example:

  • Water intake by the roots of the plant.
  • The red blood cells swell in freshwater, due to osmosis.

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