Medical Dictionary. arrhythmia. play. noun arÂ·rhythÂ·mia \Ä-Ërith-mÄ-É\. Medical Definition of arrhythmia. : an alteration in rhythm of the heartbeat either in time or force.
Central metabolism provides mechanisms for the generation of energy from carbon-energy source catabolism and the production of biosynthetic precursors and intermediates for the anabolic pathways essential to maintain cell structure and function.
So 2, 3, 5, and 6 carbon-units can be used for normal processes in metabolism. For example, five-carbon sugar phosphates can be drawn off for nucleic acid synthesis. Many intermediates can be aminated to produce amino acids. Conversely, amino acids can be deaminated to feed materials into the respiration pathway.