HLSC 1200U Lecture Notes - Lecture 7: Dephosphorylation, Exergonic Process, Hydrolysis
Document Summary
The structure of the macromolecules allows energy to be stored that can be released in metabolic pathways using special proteins. Photosynthesis is considered as an anabolic (synthetic process) metabolic pathways capture light energy and store as chemical energy. Light energy stored as chemical energy in bonds of carbohydrates. Catabolic (breaking down the molecules to get the energy) metabolic pathways. Pathway used depends on presence or absence of o2. Complete oxidation, waste includes h2o, co2, net energy: 32 atp (per molecule of glucose) Anaerobic conditions: fermentation, lack of oxygen. incomplete oxidation, waste includes organic coumpounds and co2 net energy: 2 atp. Chemical energy stored in carbohydrate bonds is extracted and converted into usable energy (atp). Overall reaction for complete oxidation of glucose to co2. 3- molecule (pi: endergonic - energy consumed, adp + pi + free energy ---> atp. De-phosphorylation : release of pi molecule through hydrolysis, exergonic - energy released.