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Anabolic reactions nclude all the synthesis reactions in the body where simpler molecules combine to form larger and more complex molecules.
Protein synthesis, glycogenesis, and nucleic acid synthesis are some of the common anabolic reactions.
These reactions are endergonic, meaning that they require a net energy input to form new bonds. This energy is often in the form of ATP.
Catabolism is the reverse of anabolism and includes all the decomposition reactions in the body.
Catabolic reactions are exergonic, meaning that they release more energy than they absorb. This energy typically comes from breaking the covalent bonds in the reactant molecules.
For instance, glycolysis breaks down the 6-carbon glucose into two molecules of 3-carbon pyruvate, releasing energy as ATP.
In biological systems, catabolism and anabolism are often coupled such that the energy released during catabolic processes drives anabolic reactions. This helps maintain the energy balance in an organism and supports its overall metabolism.
The first law of thermodynamics holds that energy can neither be created nor destroyed—it can only change form. An organism's essential function is to…
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