photosystems

• Where are photosystems located?


  thylakoid membrane of a chloroplasts
• where do you find pigments in the thylakoid membrane


  in photosystems
• what are the role of a photosystem


  to absorb photons of light energy,
• what happens in a photosystem after the photons are absorbed


  they act as transducers by transferring this light energy to high energy electrons
• what happens to the high energy electron produced by the photosystems


  they are used to fuel protons pumps and the synthesis of ATP
• how are the accessory pigments arranged in a photosystem


  they are grouped into clusters with associated proteins forming the antenna complex
• what is the antenna complex


  hundreds of pigment molecules create a large surface area for light energy absorption
• what does a photosystem look like

  
• what happens to the light photons absorbed by the pigments in the antenna complex


  the energy is filtered down into the reaction centre below
• what is found in the reaction centre


  chlorophyll a molecules
• where is the reaction centre located


  just below the antenna complex
• what happens to the light energy when it reaches the chlorophyll a in the reaction centre


  the electrons are exited to become high energy electrons
• how many photosystems are there


  2
• what wavelength of light is best absorbed at photosystem one


  700nm
• what wavelengths of light are best absorbed at photosystem 2


  680nm