MCB 2610 Chapter Notes - Chapter 13: Pyruvate Dehydrogenase, Isocitrate Dehydrogenase, Oxidative Phosphorylation
22 Sep 2016
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Macromol synthesis consumes most of a cells metabolic resources during active growth. Number of available metabolic pathways means they can utilize a vast array of molecules help microbes operate in environments that most multicellular orgs cannot tolerate. Atp is needed for all mechanical and biosynthetic processes. Microbes have a multitude of metabolic pathways that allow them to use inorg and org sources of energy. Metabolism encompasses all biochem rx occurring in a cell. Catabolism refers to the breakdown and oxidation of larger molecules yielding energy needed for anabolism. Anabolism is the biosynthesis of macromol cell components from smaller molecular subunits. Most all metabolic functions rely on enzymes to facilitate the chemical rx needed for metabolism. An enzyme is a molecule or complex that catalyzes the conversion of specific reactants (substrates) into products. Once rx is complete the enzyme returns to its prior state and it is not consumed.
