Confused and have questions? We’ve got answers. With Chegg Study, you can get step-by-step solutions to your questions from an expert in the field. If you rather get 1:1 study help, try 30 minutes of free online tutoring with Chegg Tutors.


From Biology-Online Dictionary | Biology-Online Dictionary
Jump to: navigation, search



The reaction center chlorophyll (or the primary electron donor) of photosystem I that is most reactive and best in absorbing light at wavelength of 700 nm.


P700 consists of a group of pigments acting as a single entity or like a single molecule when it receives excitation energy. It is named after the wavelength (in nanometers) of their red-peak absorption maximum, which in this case, is the deep-red or 700 nm.

Compare: P680
See also: photosystem I