VETS1032 Lecture Notes - Lecture 9: Cellular Respiration, Chemical Bond, Covalent Bond
22 Jul 2018
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If we do not have energy input, spontaneous chemical reactions don"t occur and cellular will be disordered. Note: energy can be interconverted: both photosynthesis and cell respiration are complementary processes. Entropy: measure of disorder in a system. Delta h = delta g + t deltas and this is gibbs free energy. Therefore only reactions with a negative change in free energy will occur spontaneously (- delta g). Coupled reactions: a reaction is coupled together if they share one or more intermediates. Overall free energy change is simply the sin of the individuals (delta g value: a reaction that is unfavourable (positive delta g) can for this reason be driven by a second, highly favourable reaction. Single reaction: glucose + fructose sucrose (the delta g is +5. 5, therefore this reaction will not occur) But adding energy e. g: glucose + atp glucose 1p + adp, glucose 1p + fructose sucrose + p.
