00:01
If oxygen is more concentrated outside the salvin in, a, the oxygen will move in by active transport.
00:08
B, the oxygen will diffuse out.
00:10
C, there'll be no net movement of the oxygen.
00:12
D, the oxygen will diffuse in.
00:14
Or e, the process of osmosis will be used to achieve equilibrium.
00:19
So we're looking at three types of movement here.
00:22
We have diffusion, also known as passive transport.
00:25
We have active transport.
00:27
And we have osmosis.
00:28
Osmosis is the type of passive, but specifically it is water.
00:33
So it's not going to be the process of osmosis here, because oxygen is perfectly capable of moving in or out of a cell by diffusion.
00:43
Okay, will it be active? well, we have a cell, and let's say the concentration of oxygen inside, let's put it at one and two.
00:53
So two is larger.
00:55
Would there be active transport to get into the cell? well, no.
01:02
Active transport is used to go down a concentration, up a concentration gradient.
01:07
So active is putting in energy to go up a concentration gradient.
01:13
And we just don't have to do that right now, because to go into the cell would be to go down the concentration gradient...