Diffusion and Osmosis.
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What is Diffusion? | Diffusion is the movement of molecules so they mix.
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| Which way do molecules move during the process of Diffusion? | Molecules move with the concentration gradient during Diffusion (they move from an area of high concentration to an area of low concentration.)
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| Does Diffusion require energy? | No
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| What is Osmosis? | Special kind of Diffusion. Water molecules move through across plasma membrane. Occurs when a membrane has tiny holes which let water molecules pass through but not larger molecules (eg. sugar). A membrane like this is called semi-permeable.
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| What is a semi-permeable membrane? | Only some substances can pass through it.
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| Which way do water molecules move during the process of Osmosis? | With the concentration gradient (from an area of high concentration to an area of low concentration).
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| Does Osmosis require energy? | No
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Created by:
zarap103
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