Understanding Metabolism: The Chemical Processes that Sustain Life in Living Organisms

Metabolism

the chemical processes that occur within a living organism in order to maintain life.

Metabolism is the set of chemical reactions that occur in living organisms in order to sustain life. It involves the breakdown of food molecules into simpler ones, releasing energy which is used to fuel various cellular processes, as well as the synthesis of complex molecules necessary for growth and repair.

Metabolism can be divided into two main processes: catabolism and anabolism.

Catabolism is the breakdown of complex molecules, such as carbohydrates, fats, and proteins, into simpler ones, such as glucose, fatty acids, and amino acids. This process releases energy in the form of ATP (adenosine triphosphate), which is used by the cell as a source of energy for various metabolic processes.

Anabolism, on the other hand, is the synthesis of complex molecules, such as proteins, nucleic acids, and carbohydrates, from simpler ones. This process requires energy, which comes from ATP generated during catabolism.

Overall, metabolism is essential for the survival of all living organisms, as it enables them to obtain energy and nutrients from the environment, and use them to maintain the structural and functional integrity of their cells and tissues.

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