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en.wikipedia.org/wiki/Photosystem

Photosystems are functional and structural units of protein complexes involved in photosynthesis that together carry out the primary photochemistry of photosynthesis: the absorption of light and the ... in the reaction-center chlorophyll are excited to a higher energy level and are trapped by the primary electron acceptors.

en.wikipedia.org/wiki/P680

P680, or Photosystem II primary donor refers to either of the two special chlorophyll dimers ... This electron is subsequently captured by the primary electron acceptor, a pheophytin molecule located within photosystem II near P680.

www.biologyaspoetry.com/terms/primary_electron_acceptor.html

Dec 11, 2016 ... Click here to search on 'Primary Electron Acceptor' or equivalent… Click on ... Pop Quiz – test your biology titude → define "fimbriae (fimbria)"

www.biology-online.org/dictionary/Electron_acceptor

Nov 27, 2008 ... Definition ... An electron acceptor is an oxidizing agent and is itself reduced during the ... See also: redox reaction, electron transport chain.

www.ncbi.nlm.nih.gov/pmc/articles/PMC1163938

Abstract. The properties of the component 'X' identified as the primary electron acceptor of Photosystem I in spinach was investigated by ...

www.khanacademy.org/science/biology/photosynthesis-in-plants/the-light-dependent-reactions-of-photosynthesis/a/light-dependent-reactions

The high-energy electron is passed to an acceptor molecule and replaced with an .... state, meaning that one of its electrons is boosted to a higher-energy orbital . ... The primary electron acceptor of PSII is pheophytin, an organic molecule that  ...

europepmc.org/articles/pmc1163938/pdf/biochemj00528-0080.pdf

transfer ofan electron to a primary electron-acceptor complex ... primary electron acceptor is still uncertain. ..... can be observedonly under very closely defined.

pubs.acs.org/doi/abs/10.1021/ja00543a062

Nov 5, 1980 ... One- and Two-Dimensional Electron Spin Echo Envelope Modulation Study of the Intermediate Electron Acceptor Pheophytin inN- ...

www.sciencedirect.com/science/article/pii/S0005272801001980

The primary electron donor of photosystem I, P700, is a chlorophyll species that in ... P700*, that can transfer an electron to the primary electron acceptor A0, thus ..... stable well-defined species embedded in a conserved protein environment.