Difference Between Photosystem I and Photosystem II

The two main multi-subunit membrane protein complexes differ in their absorbing wavelength, where the photosystem I or PS 1 absorbs the longer wavelength of light which is 700 nm while photosystem II or PS 2 absorbs the shorter wavelength of light 680 nm.

1. What is the difference between ps1 and ps2?
2. What are the functions of photosystem I and photosystem II in plants?
3. What is PSI and PSII?
4. What is the functional difference between these two photosystems?
5. What is the main role of photosystem I?
6. What happens in photosystem II?
7. What is the main function of photosystem II?
8. What is the most important function of PS II?
9. What does photosystem I produce?
10. Does photosystem 2 produce oxygen?
11. Where does photosystem 2 get its electrons?

What is the difference between ps1 and ps2?

Photosystem I (PS I) and photosystem II (PS II) are two multi-subunit membrane-protein complexes involved in oxygenic photosynthesis. ... The main difference between photosystem 1 and 2 is that PS I absorbs longer wavelengths of light (>680 nm) whereas PS II absorbs shorter wavelengths of light (<680 nm).

What are the functions of photosystem I and photosystem II in plants?

Photosystem II produces a proton gradient that drives the synthesis of ATP. Photosystem I yields reducing power in the form of NADPH. Although several groups of bacteria have just one of the two photosystems, the cyanobacteria, algae, and plants have both.

What is PSI and PSII?

Photosystem I (PSI) and Photosystem II (PSII) harvest light energy to drive photosynthesis. ... PSI coordinates several Chls that absorb light at wavelengths longer than 700 nm, while PSII is enriched in Chl b and therefore shows stronger absorption around 475 nm and 650 nm [1].

What is the functional difference between these two photosystems?

What is the functional difference between these two photosystems? Photosystem I absorbs light in wavelengths shorter than 700mn. Photosystem II absorb wavelengths of light shorter than 680nm. Photosystem I uses energy from light to reduce NADP+ to NADPH+H+.

What is the main role of photosystem I?

Photosystem I is an integral membrane protein complex that uses light energy to catalyze the transfer of electrons across the thylakoid membrane from plastocyanin to ferredoxin. Ultimately, the electrons that are transferred by Photosystem I are used to produce the high energy carrier NADPH.

What happens in photosystem II?

Photosystem II is the first link in the chain of photosynthesis. It captures photons and uses the energy to extract electrons from water molecules. ... As these electrons flow down the chain, they are used to pump hydrogen ions across the membrane, providing even more power for ATP synthesis.

What is the main function of photosystem II?

Photosystem II (PSII) is a multi-component pigment-protein complex that is responsible for water splitting, oxygen evolution, and plastoquinone reduction.

What is the most important function of PS II?

The most important of PS II is splitting of water and evolution of molecular oxygen.

What does photosystem I produce?

The light reaction of photosynthesis. High-energy electrons, which are released as photosystem I absorbs light energy, are used to drive the synthesis of nicotine adenine dinucleotide phosphate (NADPH). ... Photosystem I obtains replacement electrons from the electron transport chain.

Does photosystem 2 produce oxygen?

Photosystem II is the first membrane protein complex in oxygenic photosynthetic organisms in nature. It produces atmospheric oxygen to catalyze the photo-oxidation of water by using light energy. It oxidizes two molecules of water into one molecule of molecular oxygen.

Where does photosystem 2 get its electrons?

Photosystem II obtains replacement electrons from water molecules, resulting in their split into hydrogen ions (H+) and oxygen atoms. The oxygen atoms combine to form molecular oxygen (O₂), which is released into the atmosphere. The hydrogen ions are released into the lumen.