00:01
Facilitated diffusion, let's say fd in short, is also called as facilitated transport or a passive mediated transport and this is the mechanism of spontaneous passive transport of molecules or ions across a biological membrane, let's say bm in short.
00:22
Now this diffusion happens through specific trans membrane proteins, let's say tmp, in short or a set of integral proteins.
00:35
This kind of transport doesn't require the use of atp for energy.
00:43
Now active transport let's say at in short is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration against a concentration gradient let's say cg in short now active transport requires the cellular energy for this to happen and thereby it needs atp now active transport is divided into two types one is the primary active transport and the second one is called the secondary active transport in case of primary active transport this requires or utilizes the atp for energy whereas secondary active transport utilizes an electrochemical gradient, let's say ecg in short.
01:40
Now, in case of facilitated diffusion, this requires two kinds of membrane proteins.
01:47
The first one are called the channel proteins, whereas the second one is called the carrier proteins.
01:54
Now, with the help of these two kind of proteins, it helps to transport larger molecules or huge molecules across the cell membrane, let's say cm in short.
02:09
The channel proteins, let's say cp in short, spans the cell membrane and makes the hydrophilic tunnels, let's say hd in short, across it allowing their target molecules to pass through by the diffusion...