Tag Archives | Microorganisms

Electron Transport Chain of Bacteria (With Diagram)

The electron transport chains of bacteria (prokaryotes) operate in plasma membrane (mitochondria are absent in prokaryotes). Some bacterial electron transport chains resemble the mitochondrial electron transport chain. Paracoccus denitrificans is a gram-negative, facultative anaerobic soil bacterium. It is a model prokaryote for studies of respiration. When this bacterium grows aerobically, its electron transport chain possesses four complexes that correspond to [...]

By |2016-09-16T06:10:18+00:00September 16, 2016|Bacteria|Comments Off on Electron Transport Chain of Bacteria (With Diagram)
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Metabolic Pathways to Break Glucose into Pyruvate

The following points highlight the three main metabolic pathways to break glucose into pyruvate. The pathways are: 1. Glycolysis 2. Pentose Phosphate Pathway or Hexose Monophosphate Pathway 3. Entner-Doudoroff Pathway. Metabolic Pathway # 1. Glycolysis: Glycolysis (Gk. glykys = sweet, lysis = splitting), also called glycolytic pathway or Embden-Meyerhof-Parnas (EMP) pathway, is the sequence of reactions that metabolises one molecule [...]

By |2016-09-16T06:10:16+00:00September 16, 2016|Microbial Respiration|Comments Off on Metabolic Pathways to Break Glucose into Pyruvate
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Re-Oxidation of NADH during Fermentation | Microbiology

In this article we will discuss about the re-oxidation process of NADH during fermentation. NADH is not oxidized by the electron transport chain (i.e., the oxidative phosphorylation does not occur) in the absence of aerobic or anaerobic respiration because, in that condition, no external electron acceptor becomes available. Yet NADH generated in glycolysis during the oxidation of glyceraldehyde 3-phosphate to [...]

By |2016-09-16T06:09:55+00:00September 16, 2016|Fermentation|Comments Off on Re-Oxidation of NADH during Fermentation | Microbiology
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