00:01
So you're looking at a section of a membrane, plasma membrane and shows the phosphate bilipid layer.
00:24
So obviously the feature is that you have hydrophilic head with hydrophobic tail.
00:34
So you can see that the outer layer, there are hydrophilic head with a circle, and the hydrophobic tail, they're actually stay away from the aqueous layer, and they're in the middle of the spine layer.
00:52
So as you can see, the head, hydrophilic, and these are the hydrophobic tail, they're in the middle.
01:09
Now, the question says, choose the option that is correct.
01:12
It says the section of a membrane show represent the fluid part of the fluid mosaic model of cell membrane.
01:20
So the fluid mosaic model refer to the dynamic and flexible nature of the bilayer.
01:31
Basically, it means that the lipid bilayer is a flexible layer made of phospholipid molecules and they are interspersed with protein channels and carbohydrate chains.
01:47
Basically, this is a concept to describe a feature of this plasma membrane but i would say it doesn't describe this particular region of a section of membrane.
02:01
So a is not the correct answer.
02:04
B says that this diagram must be a section of plasma membrane because er golgi lysosome have only single layer of phospholipid.
02:16
This is not true.
02:19
So the er golgi apparatus and lysosome, they're all membrane system that they compose of lipid bilayer.
02:31
So there's no difference between the plasma membrane and er.
02:36
So they're not single layers...