cell transport unit
Storyboard Text
- Zara
- Passive Transport By: Bianca EdwardsCharacters: Zara and Alana
- Alana
- Alana Passive transport is the movement of substances across a cell membrane that doesn't require energy
- Zara what's passive transport?
- one type of passive transport is osmosis; this is the diffusion of water through a membrane, and example of this would be just like how we're at the movie theater eating lots of salty snacks would make our throats dry and we would want something to drink because the salt takes the moisture out of your throats
- Is there different types?
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- The next type is diffusion, which is when the particles are moving from high to low concentration
- well, an example would be if I sprayed perfume and you could smell it
- what about an example
- yes,that's a perfect example you're getting the hang of it
- we only have two more types left, firstly filtration. filtration is the process where solid particles in a liquid or gas are removed.
- So would an example be an air purifier, it removes particles and any other harmful things in the air
- lastly, facilitated diffusion. Facilitated diffusion is the passive movement of molecules across the cell membrane
- well maybe an example could help, an example could be transport of oxygen in the blood and muscles
- This one is kind of confusing because its seems that its closely associated with diffusion
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