Diffusion and Osmosis - Passive and Active Transport With Facilitated Diffusion
This Biology video tutorial discusses diffusion and osmosis. It also mentions the difference between passive and active transport. Diffusion is the movement of any material down the concentration gradient. Osmosis is the diffusion of water. Facilitated diffusion is the movement of material down the concentration gradient with the help of a carrier protein. Passive transport is the movement of material from a high concentration to a low concentration without the expenditure of energy. Active transport is the movement of material from a low concentration to a high concentration using the expenditure of ATP energy.
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In general, I would say that diffusion is movement due to a difference in potential. It could be a concentration gradient in this example, but it could also refer to heat moving from higher to lower temperature (potential) or water flowing from higher to lower gravitational potential or electric current flowing from higher to lower electric potential.
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Should also go over the energy equations associated with diffusion and the electrochemical gradient
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but cant the nacl ions in 10:04 go from the right to left by diffusion ? water goes from left to right due to high conc to low conc but why cant diffusion take place at that time as well or does it happen ?
@TeeHee46
4 ай бұрын
i know i’m two years late but he says “this membrane allows water to pass through but not the solid particles”
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Please explain mitosis for the next video
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great video but i didnt really understand osmosis if you could reply and help me out it would be great
Please I learnt filtration is another type of passive transport
why glucose need the carrier protein but not the other
@a_hmd01
4 жыл бұрын
Because it's hydrophobic.. Google it
@kennethwong9226
2 жыл бұрын
That still does not answer the question bro 🤣
@rubasyawish8238
Жыл бұрын
Its large molecule so it needs a carrier protein to move inside
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