photosystem

(noun)

Either of two biochemical systems, active in chloroplasts, that are part of photosynthesis.

Related Terms

  • NADPH
  • chemiosmosis
  • photophosphorylation

Examples of photosystem in the following topics:

  • The Two Parts of Photosynthesis

    • Two types of photosystems are embedded in the thylakoid membrane: photosystem II ( PSII) and photosystem I (PSI).
    • Each photosystem plays a key role in capturing the energy from sunlight by exciting electrons.
    • Photosystems consist of a light-harvesting complex and a reaction center.
    • In photosystem I, the electron comes from the chloroplast electron transport chain.
    • As explained above, the photosystems manipulate electrons with energy harvested from light.
  • Processes of the Light-Dependent Reactions

    • Light energy is converted into chemical energy in a multiprotein complex called a photosystem.
    • Two types of photosystems, photosystem I (PSI) and photosystem II (PSII), are found in the thylakoid membrane inside the chloroplast .
    • The light-dependent reactions begin in photosystem II .
    • A photosystem consists of a light-harvesting complex and a reaction center.
    • In (b) photosystem I, the electron comes from the chloroplast electron transport chain.
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