Cell Respiration Metabolism Basics of Metabolism As we have mentioned, the breakdown of ATP is an energetically favorable reaction. This is true because it involves splitting one larger, more organized molecule into two smaller ones. The energy that is released in this process can be used to drive other, less favorable reactions forward. In this way, ATP acts as a major energy source for cells. As one can imagine, there are many different anabolic and catabolic reactions going on at any second in our bodies. As a result, metabolic pathways must be highly regulated as to ensure that the proper enzymes for synthesis and degradation are active at the appropriate times. Some of this regulation is made possible by different metabolic processes occurring in distinct parts of the cell. Types of Metabolic Reactions Oxidation and Reduction Reactions There are a number of different types of metabolic reactions that typically take place. One class of reactions that will be mentioned a lot in this guide are oxidation and reduction reactions. These reactions involve the gain and loss of electrons and often also involve the cleavage of
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