Biology

• Absorption spectra


  Showing the absorption of light by chlorophyll pigments
• Action spectra


  The rate of photosynthesis at different wavelengths
• The light dependent stage


  Energy from sunlight is transferred into the production of ATP and the coenzyme NADP is reduced.
• ATP stands for


  Adenosine triphosphate
• Last phosphate can be broken

  To release high energy for cells to use

  Form ADP- adenosine diphosphate

  Produce a free phosphate group
• Phosphorylation


  The re-attachment of the free phosphate group to ADP to form ATP
• Photophosphorylation


  The additon of a phosphate to ADP to make ATP using the energy that originally came from light
• Where does cyclic photophosphorylation occur

  the thylakoid membrane
• What Photosystem/s does cyclic photophosphorylation use

  PS I only
• What Photosystem/s does non-cyclic photophosphorylation use

  PS II and PS I
• What is the product of cyclic photophosphorylation

  ATP only
• Photolysis of water


  2H20→4H^+ + 4e- + 02 (Oxygen gas)
• Product of non cyclic Photophosphorylation

  ATP and NADPH
• Chemiosmosis


  Synthesis of ATP