In this article we will discuss about oxidation-reduction reactions in living organisms. In biological systems energy is generally released from oxidation-reduction reactions of organic compounds catalysed by enzymes. It is, therefore, necessary to understand clearly the nature of oxidation-reduction reactions occurring in living systems. The most common organic compound used as substrate for energy production is glucose. When one mole [...]
The below mentioned article provides notes on multi-enzyme complex. Many enzymes in living cells catalyse chains of reaction in a sequential order either in a biosynthetic or a catabolic pathway. In the preceding paragraphs hypothetical examples of such pathways have been cited. The series of enzymes catalyzing such chains of reactions are said to form a multi-enzyme system. In its [...]
The following points highlight the top three pathways of glucose dissimilation in organisms. The pathways are: 1. Embden-Meyerhof Pathway or Glycolysis 2. Pentose Phosphate Cycle (PPC) 3. Entner-Doudoroff Pathway (EDP). Glucose Dissimilation: Pathway # 1. Embden-Meyerhof Pathway or Glycolysis: This catabolic pathway leads to splitting of glucose to two molecules of pyruvic acid i.e. a six- carbon compound is broken [...]