Photosystem 2 happens in photosynthesis before photosystem 1. However they are numbered in order of how they were discovered. Photosystem 1 was discovered before photosystem 2. In photosynthesis the order of them is 2 then 1.
meaning that photosystem 1 was discovered 1st but photosystem 2 happens 1st in photosynthesis
Photosystem II
Water participates directly in the light reactions of photosynthesis by donating electrons to photosystem II during the process of photolysis. These electrons are used to replace the ones lost by chlorophyll when it absorbs light energy, allowing the photosystem to continue absorbing light and generating ATP and NADPH for the Calvin cycle.
Yes, photosystem 2 is a light-dependent process in photosynthesis. It absorbs photons to initiate the light-dependent reactions of photosynthesis, where it helps generate oxygen and produce ATP and NADPH.
Photosystem II is a protein complex in plants and algae that is essential for the process of photosynthesis. It absorbs light energy and uses it to drive the transfer of electrons from water to plastoquinone. This eventually leads to the production of ATP and NADPH, which are important energy carriers used in the Calvin cycle to convert carbon dioxide into sugar.
A photosystem is a cluster of pigments and proteins in the thylakoid membrane of chloroplasts, involved in the light-dependent reactions of photosynthesis. It captures light energy and converts it into chemical energy, which is used to drive the production of ATP and NADPH.
The thylakoid membrane contains 2 photosytems, known as Photosystem I and Photosystem II. Together, they function to absorb light and transfer energy to electrons.
Photosystem
This is a speculative area! The most detailed studies and reasoning relevant to this question are perhaps those of Nathan Nelson, who has used genomic analyses of Eubacteria, Archaea, and eukaryotes to draw up a tentative evolutionary tree of photosynthetic reaction centers. His conclusion is that photosystems I and II, or rather, reaction centers of these two types, had a common origin about 2.5 Ga (billion years ago). - - - photosystem II - - - It was Kodak that invented the first, ever, photosystem for every man to use. In those days you needed to buy the camera and after having taken all the shots, you simply returned the camera (intact) to Kodak. Kodak would then make prints of your photos and return it. --- But I think you meant the photosystem used in photosynthesis lol photosystem 1 was discovered first, but it does not mean that it evolved first. Photosystem 2 is actually first in the process of capturing light energy. But as you can see, the answer is mainly a mystery, just like "Which came first, the chicken or the egg?" Hope this helped --
Photosystem II
Light energy is not exactly trapped. The light energy excites the electron in the reaction centres of photosystem I and photosystem II. The electron excites and transfers to the electron transport chain ( chain of electron carriers), this produces ATP. Then the electron of photosystem II is transferred by photosystem I and the electron of the photosystem I is used with H+ and NADP to form NADPH. Photosystem II gets back an electron from photolysis of water.
Photosystem 1
In photosynthesis, electrons flow from water molecules to photosystem II, then to photosystem I, and finally to NADP+ ultimately producing NADPH. Along the way, the electrons generate a proton gradient that drives ATP production.
pigments in photosystem II absorb light
Water participates directly in the light reactions of photosynthesis by donating electrons to photosystem II during the process of photolysis. These electrons are used to replace the ones lost by chlorophyll when it absorbs light energy, allowing the photosystem to continue absorbing light and generating ATP and NADPH for the Calvin cycle.
ATP
Photosynthesis is not a system. It is a process in plants. It is very important process.Photosynthesis is a process of making sugars from CO2 and water by using light energy. Photosystem I and photosystem II are involved in this process to transfer electrons across the membrane. Photosynthesis occurs in plants algae and certain bacteria.
No. Photosystems I and II are where light-dependent reactions occur, while the Calvin Cycle is where light-independent reactions occur. Photosynthesis begins with Photosystem II, then Photosystem I, then the products from there go to the Calvin Cycle. (yes photosystem II comes before photosystem I)