MICR 2123 Lecture Notes - Lecture 9: Decarboxylation, Na Hussein Dey, Pyruvate Dehydrogenase Complex
8 Oct 2016
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Document Summary
Energy carriers and their role in energy transfer. Glucose breakdown: fermentation, the tricarboxylic acid (tca) cycle. All living cells need energy to move and grow. The energy to build cells comes from chemical reactions. In chemical reactions: catabolism breakdown of complex molecules into smaller ones, anabolism reactions that build cells. Many of the cell"s energy transfer reactions involve energy carriers: molecules that gain or release small amounts of energy in reversible reactions, examples atp (adenosine triphosphate) and nadh (nicotinamide adenine dinucleotide) Atp has 3 phosphate molecules, 2 of them are connected via high-energy bonds, meaning that their hydrolysis will release energy. Atp can transfer energy to cell processes in three different ways: hydrolysis releasing phosphate (pi, hydrolysis releasing pyrophosphate (ppi, phosphorylation of an organic molecule. In order for cells to grow, the eat substrates and produce energy in the form of atp molecules that can keep them going.
