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Diffusion & Osmosis

Diffusion & Osmosis. Cell Membrane & Diffusion. Cell Membrane & Diffusion. Allows some things into the cell (food and nutrients) as well as other things out of the cell (waste products) Cell membrane is a barrier through which everything must pass on its way into or out of the cell

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Diffusion & Osmosis

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  1. Diffusion & Osmosis

  2. Cell Membrane & Diffusion

  3. Cell Membrane & Diffusion • Allows some things into the cell (food and nutrients) as well as other things out of the cell (waste products) • Cell membrane is a barrier through which everything must pass on its way into or out of the cell • The passage of materials occurs through the process of diffusion

  4. Diffusion vs. Osmosis • Diffusion = the movement of molecules from areas where there are higher concentrations to areas where there are lower concentrations. • Osmosis = the movement of water molecules from areas where there are higher concentrations to areas where there are lower concentrations.

  5. http://leavingbio.net/OSMOSIS%20AND%20DIFFUSION.htm

  6. Osmosis

  7. Osmosis

  8. Growing Cells • As cells use nutrients, they produce more organelles and get bigger • Problem – need a large enough surface area to work with its volume • It gets to the point where the cell gets too large that it must divide into smaller cells

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