00:01
All right, so in this question we are talking about diffusion or osmosis.
00:05
The other one important to note about both diffusion and osmosis.
00:10
These processes, they are, will be called passive.
00:15
They do not require energy.
00:19
And this is due to the fact that when we're talking about concentration gradients, our particles flow from a area of high concentration to an area of, of low concentration.
00:34
Osmosis specifically has to do with the movement of water molecules.
00:39
Diffusion can be any type of molecules or can be gas molecules like oxygen, carbon, dioxide.
00:47
But overall, they do not require energy because they are following their concentration gradients from high to low concentration.
00:57
So i have down below an example of quotation marks a cell.
01:05
And a lot of times in experiments like this we are using a dialysis bag to represent our cell.
01:11
So what exactly is that representing here? and obviously you can probably guess it's used to represent our cell membrane.
01:21
And that's because our cell membrane, as we know, is semi -permeable.
01:25
So not everything can just simply diffuse in or out of it.
01:30
Only certain materials can, certain sizes, that sort of thing.
01:35
So it is selective on what can come in and what can go out.
01:41
So the first question is how would our cellute concentration affect the speed of diffusion or osmosis? so i have some red particles drawn here, as you can see, both outside our cell and inside.
01:55
And keeping this in mind over here.
01:59
Overall, if we have more solutes, we're going to have a lower speed of diffusion or osmosis...