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).
Q. 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.
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Q. Which Photophosphorylation is both PS2 and ps4?
(i) PS I is involved in non-cyclic photophosphorylation only. (ii) PS II is involved in both cyclic and non-cyclic photophosphorylation.
Q. Which process is both PS1 and PS2?
by Biology experts to help you in doubts & scoring excellent marks in Class 11 exams….
| Question | Which of the following photosynthesis bacteria have both PS-I and PS-II Or Which was first photosynthesis organism |
|---|---|
| Type of Answer | Video, Text & Image |
Q. What bacteria has PS1 PS2?
So the correct option is ‘Cyanobacteria’.
Q. Is PS1 present in bacteria?
The reaction center of photo-system 2 (PS2) is related to the well-characterized reaction center of purple bacteria, while the reaction center of photosystem 1 (PS1) is related to the green sulfur bacteria, as is convincingly documented here. The first protein resembles the large subunits of the PS1 reaction center.
Q. Where is PS1 and PS2 located?
Photosystem I is located on the outer surface of the thylakoid membrane and is bind to the special reaction center known as P700, whereas PS II is located on the inner surface of the thylakoid membrane and the reaction center is known as P680.
Q. Is PS2 present in cyanobacteria?
Cyanobacteria are photoautotrophic prokaryotes with oxygenic photosynthesis. Like in chloroplasts, linear photosynthetic electron transfer makes use of concerted action of photosystems 2 (PS2) and 1 (PS1).
