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Molecular complex

Photosystem II

Photosystem II

A thylakoid protein–pigment complex that uses light energy to extract electrons from water.

Overview

EXPLORE BY LEVEL

Photosystem II absorbs light and starts an electron path. It replaces the electrons it loses by splitting water, which releases oxygen.

Quick Facts

AT A GLANCE
TopicPhotosynthesis & Carbon Cycle

Follow the Connections

See how Photosystem II links to other biological records.

Open network
ProcessLight-dependent ReactionsusesMoleculeChlorophyllcontains pigmentMolecular complexPhotosystem Itransfers electrons toCell componentThylakoidlocated in
All 4 Structured Connections
Light-dependent Reactions · ProcessUSES →Photosystem II · Molecular complex
Photosystem II · Molecular complexCONTAINS PIGMENT →Chlorophyll · Molecule
Photosystem II · Molecular complexTRANSFERS ELECTRONS TO →Photosystem I · Molecular complex
Photosystem II · Molecular complexLOCATED IN →Thylakoid · Cell component

Recommended Reading

Trusted references for learning more about Photosystem II.

textbookThe Light-Dependent Reactions of PhotosynthesisOpenStax Biology 2e
Research Claims

PSII photochemistry couples charge separation to water oxidation through a manganese–calcium cluster; damage and repair are important under excess light.