00:01
Okay this question here says, label the solution relative to the inside of the cell, then drag the correct cell to each solution.
00:07
Assume that the solute molecules cannot cross the membranes, and you have here a hypertonic solution, hypotonic solution, you have this figure here and this figure here, and you have four blanks.
00:20
So remember that each of these circles represent solutes, okay? and the solutes are going to exert, remember, an osmotic pressure, and that osmotic pressure is going to drag water to them.
00:30
So if you have, for example, this solute here is going to drag water to it, and also the solutes here that you have.
00:36
So in this case, this compartment here that is the extracellular is going to exert an osmotic pressure or an osmolarity of 150.
00:46
Okay so this is the, you can see this in general terms as the force of water, or as a force that this compartment is dragging water to it, okay? and the same is going to happen here, but here the osmolarity is 300.
01:03
So it means that this cell here, or the intracellular, is dragging water stronger than here because the value here is higher than this.
01:10
So it means that water is going to be moving in this direction, inside of the cell, okay? so they're asking us what type of solution this is.
01:22
So this solution, as it has a lower osmolarity than the cell, then it means that this solution is hypotonic, okay? so this is going to be a hypotonic solution.
01:39
Now let's go here.
01:41
In this case, you have kind of the opposite to this.
01:45
As you can see here, this solution has higher amount of solutes.
01:49
So the osmolarity here is going to be higher than here.
01:52
As you can see here, the osmolarity is higher, so it means that this solution here is hypertonic to the cell...