It's photosystem II, in the electron transport chain of photosynthesis where light is used to create O2 and H.
In photosystem 2- water(photolysis) In photosystem 1 - electron from photosystem 2
Photosystem II is older in terms of evolutionary history compared to Photosystem I. Photosystem II is thought to have evolved before Photosystem I as it evolved to oxidize water in order to provide electrons for the electron transport chain, which Photosystem I then uses to reduce NADP+ to NADPH.
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
In the process powered by sunlight hitting Photosystem II, water (H₂O) is a key reactant. When light energy is absorbed by Photosystem II, it leads to the splitting of water molecules through a process known as photolysis. This reaction generates oxygen (O₂) as a byproduct and provides electrons that are essential for the photosynthetic electron transport chain.
Photosystem II plays a role in absorbing light energy and initiating the process of photosynthesis by passing electrons through the electron transport chain. It also splits water molecules to release oxygen as a byproduct.
NADPH
Photosystem 2 is located in the thylakoid membrane of the chloroplasts, while Photosystem 1 is located downstream from Photosystem 2 in the thylakoid membrane. Both photosystems are important for light-dependent reactions during photosynthesis.
Photosystem's electron travel through the electron transport chain(etc) where ATP is produced and then back to the photosystem. In non-cyclic photophosphorylation, Photosystem II electron then is absorbed by photosystem I, photosystem I electron used to form NADPH and photosystem II gets its electron from photolysis of water. For you unfortunate children using Novanet: They move through an electron transport chain to photosystem 1.
In photosystem 2- water(photolysis) In photosystem 1 - electron from photosystem 2
Photosystem II is older in terms of evolutionary history compared to Photosystem I. Photosystem II is thought to have evolved before Photosystem I as it evolved to oxidize water in order to provide electrons for the electron transport chain, which Photosystem I then uses to reduce NADP+ to NADPH.
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 1
Photosystem II most likely evolved first because it provides the energy for producing ATP and passes its electrons to photosystem I.
In the process powered by sunlight hitting Photosystem II, water (H₂O) is a key reactant. When light energy is absorbed by Photosystem II, it leads to the splitting of water molecules through a process known as photolysis. This reaction generates oxygen (O₂) as a byproduct and provides electrons that are essential for the photosynthetic electron transport chain.
Photosystem II plays a role in absorbing light energy and initiating the process of photosynthesis by passing electrons through the electron transport chain. It also splits water molecules to release oxygen as a byproduct.
A Photosystem is a funnel shaped cluster of photosynthetic pigments, in the thylakoid membrane of the chloroplast.
Photosystem two produces O2, ATP, and NADP+