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METABOLIC REACTIONS - METABOLICREACTIONS . areinvolved...

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METABOLIC REACTIONS Metabolism-sum of all the chemical reactions within a living organism. 2 main types of reactions  are involved: 1. Catabolism  (catabolic or degradation reactions)-- these break down larger molecules to  smaller ones, breaking chemical bonds and releasing energy in the process (exergonic). 2. Anabolism  (anabolic or biosynthetic reactions)- these build larger molecules from smaller  ones, building chemical bonds and using energy (endergonic). Biosynthesis is the name for  building reactions in living organisms. Catabolic reactions provide the energy to drive the anabolic reactions. This coupling involves the  formation of ATP. ATP stores energy from catabolic reactions and transfers it to anabolic  reactions. Catabolic reactions also provide building blocks for anabolic reactions.
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