Chapter/ Microbial metablism Catabolism anabolism Fermentation Respiration Nitrogen fixtation The synthesis of peptiglydogen
Chapter7 Microbial metablism Catabolism, anabolism Fermentation Respiration Nitrogen fixtation The synthesis of peptiglydogen
7.1 An overview of metabolism Metabolism may be divided into two major parts: catabolism and anabolism Catabolism: larger and more Waste products complex molecules are broken Nutrients for Biosynthesis down into smaller, simpler molecules with the release of Energy ehergy S Energy Anabolism: the synthesis of complex molecules from simpler ones with the input of energy E Igy sonce
7.1 An overview of metabolism • Metabolism may be divided into two major parts: catabolism and anabolism. • Catabolism: larger and more complex molecules are broken down into smaller, simpler molecules with the release of energy. • Anabolism: the synthesis of complex molecules from simpler ones with the input of energy
Amino acids Monosaccharides TThe Stage 2 NADH three stages AcotyI-CoA of ATP catabolism FADH Tricarboxylic acid cycle Electron Cytochromes Figure 9.3 The Three Stages of Catabolism. A general diagram of aerobic catabolism in a chemoorganoheterotroph showing the three stages in this process and the central position of the tricarboxylic acid cycle. Although there are many different proteins, polysaccharides, and lipids, they are degraded through the ctivity of a few common metabolic pathways. The dashed lines show the flow of electrons, carried by NADH and FADH2. to the electron transport chain
The three stages of catabolism
7.2 Fermentation The Embden-Meyerhof Pathway a fermentation is an internally balanced oXidation-reduction reaction in which some atoms of the energy source(electron donor become more reduced whereas others become more oxidized, and energy is produced by substrate-level phosphorylation
7.2 Fermentation : The Embden-Meyerhof Pathway A fermentation is an internally balanced oxidation-reduction reaction in which some atoms of the energy source (electron donor) become more reduced whereas others become more oxidized, and energy is produced by substrate-level phosphorylation
ADP (a) Substrate-level phosphorylation Energized membrane 子++十十十十十十+ ADP P Less energized membrane (b) Oxidative phosphorylation Energy conservation in fermentation and respiration
Energy conservation in fermentation and respiration