00:05
Hello, my dear students, the concept given in the question is the function of photosystems or photosystem.
00:19
What is required for us is to find that part or portion of the photo system i'm writing it as ps which absorbs light.
00:31
Very simple question.
00:35
Let us get into the explanation.
00:36
With a supporting image.
00:42
My dear friends, first let's understand what is a photosystem.
00:48
A photosystem is a pigment protein molecule or a structure which helps in light reaction or to mediate light reaction.
01:09
Okay? now as you see in this picture, this is nothing but the thylacoid membrane over which there is imprint nation of photosystems.
01:19
There are two types of photosystem.
01:21
The photosystem with reaction center p680 is called as photosystem 2 and the one with reaction center p700 is called as photosystem 1.
01:33
Now each photo systems if you see it is made up of a reaction center yes and an antinam molecules.
01:43
So these molecules has specifically spaced around arrangement of pigments which absorbs light and the light which has been absorbed by them, they incident it over the reaction center in order to increase the strength of incoming light for this reaction center.
02:06
The same thing happens in ps1 also.
02:09
Yes, on activation, the electrons gets released from this reaction center.
02:16
Now in photosystem 2, the electrical, which has been released, it travels through a specific electron transport chain and then reaches the reaction center of ps1.
02:29
So we need not get into the non -cyclic photo fossilization water's been showing here, but we need to understand that which is that portion which helps in absorption of light.
02:41
Now when we look at the options here, it says first antenna molecule.
02:46
Now with the explanation, you must have understood that it is this molecular complex.
02:53
It is also called as light harvesting complex.
03:01
So it will be called as light harvesting complex two in photosystem two, light harvesting complex one in photosystem one.
03:09
So it is this which is absorbing the light.
03:13
Easily you can get to do...