Chlorophyll-containing photosynthetic organelles in some eukaryotic cells.

Cyclic Electron Flow

The light-induced flow of electrons originating from and returning to photosystem I to produce ATP without production of NADPH.


Stacks of thylakoids in chloroplasts.


Closed cisterna, or disc, formed by the pigment-bearing internal membranes of chloroplasts.

See also: Chlorophylls, Eukaryotic Cell, Grana, Plastid, Stroma, Thylakoid.

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Subjects: Biology