Key Terms

• Define metabolic pathway?


  A series of small reactions controlled by enzymes eg photosynthess
• Define phosphorylation?


  Adding phosphate to a molecule
• Define Photophosphorylation?


  Adding phosphate to a molecule using light
• Define Photolysis?


  The splitting (lysis) of a molecule using light (photo) energy
• Define Photoionisation?


  When light energy 'excites' electrons in an atom or molecule, giving them more energy and causing them to be released.

  The release of electrons causes the atom or molecule to become a positively-charged ion.
• Define Hydrolysis?


  The splitting of a molecule using water
• Define Decarboxylation?


  The removal of carbon dioxide from a molecule
• Define Dehydrogenation?


  The removal of hydrogen from a molecule
• Define Redox Reactions?


  Reactions that involve oxidation and reduction