Metabolism: From the Greek, metabole, meaning “change.” The simplest definition is "the sum of all chemical reactions that take place in the body."
Metabolism is the process involving a set of chemical reactions that modifies a molecule into another for storage, or for immediate use in another reaction or as a by product. It is made up of catabolism and anabolism and can be described as the total of all the catabolic and anabolic actions in a system. This includes processes for cell growth, reproduction, response to environment, survival mechanisms, sustenance, and maintenance of cell structure and integrity. Chemical reactions within a cell, the cells metabolism, provide the energy needed to maintain homeostasis and perform essential functions such as metabolic turnover, growth and cell division, and for nerve cells, the generation of action potentials.
Energy metabolism is hundreds of chemical reactions that involve the breakdown, synthesis, and transformation of energy yielding nutrients such as glucose, amino acids, and fatty acids.
This page created 26 Mar 2012 19:36
Last updated 26 Mar 2012 19:36