By What are three main differences between photosystem 1 and photosystem 2?
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| Photosystem I (PS I) | Photosystem II (PS II) |
|---|---|
| Pigments absorb longer wavelengths of light (>680nm). | Pigments absorb shorter wavelengths of light (<680nm). |
| Rich in chlorophyll a than chlorophyll-b | Rich in chlorophyll b than chlorophyll-a |
What are the 2 types of photosystem?
There are two types of photosystems in cyanobacteria, algae and higher plants, called photosystem I (PSI, plastocyanin-ferredoxin oxidoreductase) and photosystem II (PSII, water-plastoquinone oxidoreductase), both of which are multisubunit membrane complexes.
What is PS I and PS II?
Hint:PS I and PS II are photosystems that are functional units for photosynthesis. It is a particular pigment organization pattern, which absorbs and transfers light energy and processes the transfer of electrons. Pigments in the PS I absorb light of longer wavelengths which is 700nm. There is no Photolysis.
Why do plants need 2 photosystems?
Due to the large difference in the redox potential between the electron donor (oxygen in a water molecule) and final electron acceptor during the light phase of photosynthesis (NADP+), the ancestor cyanobacteria had to evolve the capability to use two photosystems working in series in order to be able to accumulate the …
What do photosystem 1 and 2 have in common?
Both photosystems contain many pigments that help collect light energy, as well as a special pair of chlorophyll molecules found at the core (reaction center) of the photosystem. The special pair of photosystem I is called P700, while the special pair of photosystem II is called P680.
What colors does photosystem 2 absorb?
The Colors of Photosynthesis These light-absorbing molecules include green chlorophylls, which are composed of a flat organic molecule surrounding a magnesium ion, and orange carotenoids, which have a long string of carbon-carbon double bonds. These molecules absorb light and use it to energize electrons.
Who discovered photosystem 1 and 2?
Robert Emerson discovered pigment system-I (PS-I) and pigment system-II (PS-II).
Who discovered ps1 and ps2?
What color light does photosystem 2 absorb?
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).
Does photosystem 1 or 2 come first?
Photosystem I vs. There are two types of photosystems in the light-dependent reactions, photosystem II (PSII) and photosystem I (PSI). PSII comes first in the path of electron flow, but it is named as second because it was discovered after PSI.
What is needed for photosystem 2 to normal?
Photosystem II is the first link in the chain of photosynthesis. It captures photons and uses the energy to extract electrons from water molecules. Finally, the electrons are placed on a carrier molecule, NADPH, which delivers them to enzymes that build sugar from water and carbon dioxide.