Question

Why is P700 called so?

Answer 1

P700:

1. The reaction-center chlorophyll-a molecular dimer linked with photosystem I in plants, algae, and cyanobacteria is P700, or photosystem I primary donor.
2. P700 is the name given to the reaction-center chlorophyll in photosystem I.
3. In the center, there are 700 chlorophyll molecules.
4. This pigment absorbs light with a wavelength of 700 nm the best.
5. 700 photons per microsecond are absorbed by it.