00:01
Regarding the bacteria operon.
00:04
So there are a lot of different operons.
00:06
They have different mechanisms.
00:07
So you can't really have like a specific figure to show how the operon works.
00:14
But we know there are something, a lot of things in common.
00:18
First of all, the operon will usually have a promoter region.
00:23
The promoter region is where the rna polymerase will bind.
00:28
And immediately after or before the promoter region, there will be usually after having a very unique operator region.
00:39
This operator region is the unique feature of the operon that works as a switch to turn on and off.
00:49
So this is the regulatory region on the dna.
00:51
It.
00:54
Usually there will be a regulator protein bind to the operator region to either turn opera on and off according to the environment stimulator.
01:03
Now after the operator usually you'll have quite a bit of structured gene they are all linked together.
01:14
So you can see from here you have four different structured genes and they are under the same promoter region.
01:24
So these structure genes they are somehow related a lot of time enzyme that will relate to metabolic processes such as break down a certain sugar like lactose or produce a specific amino acid like tryptophan so the bottom line is that these structure genes are somewhat related to a metabolic activity so this is the main structure of the operon as you can see that the key here is that you always have this operator region, this is critical for the regulation of this operon structures.
02:00
So let's look at all the options...